45 (number)

45 (forty-five) is the natural number that succeeds 44 and precedes 46.

In mathematics

Forty-five is a triangular number, and in particular the sum of all the decimal digits (0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 45). It is the smallest triangle number (after 1) which can be written as the sum of two squares. It is also a hexagonal and 16-gonal number,

45 is the sixth positive integer with a prime factorization of the form p²q, with p and q being prime.

33 is the aliquot sum of 45 and the aliquot sequence of 45 is (45, 33, 15, 9, 4, 3, 1, 0).

Since the greatest prime factor of 45² + 1 = 2026 is 1013, which is much more than 45 twice, 45 is a Størmer number.

In base 10, it is a Kaprekar number and a Harshad number.

In science

Astronomy

Chris Brown

Christopher Maurice "Chris" Brown (born May 5, 1989) is an American singer, dancer, rapper and actor. Born in Tappahannock, Virginia, he was involved in his church choir and several local talent shows from a young age. Having signed with Jive Records in 2004, Brown released his self-titled debut studio album the following year. It peaked at number two on the US Billboard 200 and was later certified double platinum by the Recording Industry Association of America (RIAA). With his first single "Run It!" peaking atop the US Billboard Hot 100, Brown became the first male artist as a lead since Diddy in 1997 to have his debut single top the chart. His second album Exclusive (2007) spawned his second Hot 100 number one "Kiss Kiss", in addition to "With You" and "Forever". The album was also certified double platinum by the RIAA.

In 2009, Brown received much media attention after pleading guilty to felony assault of his then girlfriend, singer Rihanna; he was sentenced to five years of probation and six months of community service. His third album Graffiti was released later that year, and included the top-twenty single "I Can Transform Ya". Brown's fourth album F.A.M.E. (2011) became his first to top the Billboard 200; it spawned the successful singles "Yeah 3x", "Look at Me Now", and "Beautiful People". F.A.M.E. earned Brown his first Grammy Award for Best R&B Album at the 54th Grammy Awards. His fifth album Fortune was released in 2012. However, after the release of Exclusive, Brown's albums have not been well received commercially or by music critics, with the exception of X, which received a normalized rating of 63. Brown's seventh studio album Royalty was released on December 18, 2015.

Music video

A music video or song video is a short film integrating a song and imagery, produced for promotional or artistic purposes. Modern music videos are primarily made and used as a marketing device intended to promote the sale of music recordings. There are also cases where songs are used in tie in marketing campaigns that allow them to become more than just a song. Tie ins and merchandising could be used in toys are marketing campaigns for food and other products. Although the origins of music videos date back to musical short films that first appeared in the 1920s, they came into prominence in the 1980s when MTV based their format around the medium. Prior to the 1980s, these works were described by various terms including "illustrated song", "filmed insert", "promotional (promo) film", "promotional clip", "promotional video", "song video", "song clip" or "film clip". Since the creation and increased popularity of YouTube, mainstream artists now promote new music videos by releasing trailers of short promos on the site for their upcoming song and music video. Consequentially, YouTube has been converted into a social media platform for celebrities and artists to market themselves to their fans and audiences.

Forty-five (audio drama)

Forty-five is a Big Finish Productions audio drama based on the long-running British science fiction television series Doctor Who. As the play released at the forty-fifth anniversary of the first episode of Doctor Who, it is made of four one-part stories, by different authors, rather than the usual multi-part serial. All episodes featured the Seventh Doctor as played by Sylvester McCoy, Ace played by Sophie Aldred and Hex played by Philip Olivier.

Main Cast

False Gods

by Mark Morris
Thebes, Egypt, 1902. Howard Carter discovers the history of Userhat, servant of the god Amun.

Order of Simplicity

by Nick Scovell
Mind control experiments are uncovered on a remote planet.

Casualties of War

Julión Álvarez

Julio César Álvarez Montelongo (born April 4, 1983), better known as Julión Álvarez, is a Mexican singer. After his departure from the Mexican band "Banda MS", he decided to form his own band, "Julión Álvarez y Su Norteño Banda". Today, he is one of the most renowned interpreters of regional Mexican music. In 2014, he was selected by the producer of the Mexican talent show, La Voz... Mexico, Miguel Angel Fox to participate as coach of the talent show, in its fourth edition, he later went on to be the winning coach of his pupil Guido Rochin.

In September 2015, Álvarez' album, El Aferrado was nominated at the 16th Annual Latin Grammy Awards for Best Banda Album. His song, "El Amor De Su Vida" was nominated for Best Regional Song.

Early life and career

Julión Álvarez was born and raised in the Benito Juarez municipality of Concordia Chiapas. During his childhood and adolescence he participated in several singing contests, obtaining the first prize place. At age 18, he enrolled in the 4th semester of Industrial Engineering, not doing well, he decided to move to Mazatlan Sinaloa. There he began working in restaurants. In 2003 he joined the Mexican band, "Banda MS", until 2006. Following the leave of "Banda MS" he decided to form a band called "Julión Álvarez y Su Norteño Banda".