A page of the Numeropedia - the Special Encyclopedia of Numbers
[Chemistry] The atomic number of Barium (Ba).
[EECS] 56(W, KW or MW) is one of standard numerical values for resistors (of tolerance class 5%). 56pF (picofarads) is one of standard numerical values for capacitors.
[Geology] U.S. city/town: Fifty-Six, Arkansas 72533.
[History] The number of people signed the U.S. Declaration of Independence in 1776.
[History] The number of holes arranged along a circle (of approximately 285 feet in diameter) of the Aubrey Holes, a feature of Stonehenge on the Salisbury Plain in Wiltshire, England.
[History] The number of columns on the U.S. National World War II Memorial in Washington D.C., representing 48 U.S. states and 8 territories in 1945.
[Math.] 562 = 3,136 and if all digits are decremented (except the exponent) by 1, the equality becomes: 452 = 2,025.
[Math.] 652–562 = 332, 65+56 = 112 and 65–56 = 32, the only 2-digit relationship of this type.
[Math.] A rare number: 65+56 = 112 = 121 and 65 – 56 = 32 = 9.
[Phone] International telephone dialing code for Chile.
[Tech.] The DES (Data Encryption Standard) algorithm uses 56-bit keys to encrypt/decrypt 64-bit plaintexts/ciphertexts in banking funds transfer security, since 1977 until late 1990s.
[World] The ISO country code for Belgium is 056. (ISO-3166)
[Tech.] The standard gauge (mm, millimeters) for the U.S. railroad, (4 feet 8.5 inches = 56.5 inches = 1435.1 mm, millimeters.)