50 (number)

50 ("fifty") is the number following 49 and preceding 51.

In other fields

Fifty is also:

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• The atomic number of tin
• The fifth magic number in physics
• The traditional number of years in a default jubilee period.
• The number of states in the USA (since 1959, still true in 2005).
• Hawaii Five-O - TV police show - so-called because Hawaii is the 50th state.
• A calibre of ammunition (0.50 inches: see .50 BMG)
• In millimeters, the focal length of the normal lens in 35mm photography.
• the percentage ( 50% ) equivalent to one half, so that the phrase "fifty-fifty" commonly expresses something divided equally in half, or an event of probability one half
• In U.S. dollars, the U.S. fifty dollar bill, the denomination of the Federal Reserve note with Ulysses S. Grant's portrait, the denomination of the savings bond with George Washington's portrait, and the denomination of treasury bonds with Thomas Jefferson's portrait.
• In New Zealand, the NZD 50 bill features Sir Apirana Ngata, a prominent Maori politician who worked to protect and rejuvenate Maori culture.
• In cents of the U.S. dollar, the denomination of the coin with John F. Kennedy's portrait.
• In years of marriage, the gold or "golden" wedding anniversary.
• In the title of the movie 50 First Dates, starring Adam Sandler and Drew Barrymore.
• part of the name of 50 Cent, a rapper.
• One of the years: AD 50, 50 BC, or (for example) 1950.