Selected numbers
* 50000 - round number
* 50625 - smallest fourth power that can be expressed as the sum of only 5 distinct fourth powers
* 51641 - Markov number
* 51984 - 51984 = 2282 = 373 + 113. the smallest square to the sum of only 5 distinct 4th powers.
* 52375 - Address of the office building in the Counter-Strike map cs office
* 52633 - Carmichael number
* 53016 - pentagonal pyramidal number
* 53361 - sum of the cubes of the first 21 positive integers
* 54205 - Zeisel number
* 54748 - equal to the sum of the fifth powers of its digits
* 54901 - chiliagonal number
* 55440 - colossally abundant number
* 55459 - one of nine remaining Seventeen or Bust numbers in the Sierpinski problem
* 55860 - harmonic divisor number
* 56011 - Wedderburn-Etherington number
* 56092 - the number of groups of order 256, see [1]
* 56448 - pentagonal pyramidal number
* 58367 - smallest integer that can't be expressed as a sum of fewer than 1079 tenth powers
* 58786 - Catalan number
* 59049 - 310
* 59081 - Zeisel number