Number 56

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[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.)