Numbers 51,000s

A page of the Numeropedia - the Special Encyclopedia of Numbers

All Numbers  &  50K  -  51K  -  52K  -  53K  -  54K  -  55K  -  56K  -  57K  -  58K  -  59K

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51,000

[EECS]  51K(W) is one of standard numerical values for resistors (of tolerance class 5%).

 

51,039

[Math.]  A pyramidal number (sum of all squares of integers from 1 to 31): 51039 = 12+22+…+522+532.

 

51,076

[Math.]  Squares of 2 consecutive even numbers using the same digits: 2242 = 50176 and 2262 = 51076.

 

51,111

[Zip]  U.S. Postal Zip Code: Sioux City, Iowa 51111.

 

51,408

[Math.]  Two multiples of number 7344, 7344×4 = 29,376 and 7344×7 = 51,408, use each of 10 digits 0-9 once.

 

51,492

[Math.]  Two multiples of number 7356, 7356×5 = 36,780 and 7356×7 = 51,492, use each of 10 digits 0-9 once.

 

51,641

[Math.]  One of Markov numbers are… 4181, 5741, 6466, 7561, 9077, 10946, 14701, 28657, 33461, 37666, 43261, 51641, 62210, 75025, 96557…

 

517nn

[Zip]  No such U.S. Postal Zip Codes.

 

51,832

[Math.]  The ratio 51832/6479 = 8, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #8.

 

518nn

[Zip]  No such U.S. Postal Zip Codes.

 

51,973

[Math.]  A prime number of all 5 different odd digits.

 

519nn

[Zip]  No such U.S. Postal Zip Codes.

 

51nnn

[Zip]  U.S. Postal Zip Codes of Iowa: 50nnn-52nnn.