51263506254 has 32 divisors (see below), whose sum is σ = 107213932800. Its totient is φ = 16309865792.

The previous prime is 51263506243. The next prime is 51263506267. The reversal of 51263506254 is 45260536215.

It is a super-2 number, since 2×51263506254² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333279 + ... + 462170.

It is an arithmetic number, because the mean of its divisors is an integer number (3350435400).

Almost surely, 2^51263506254 is an apocalyptic number.

51263506254 is an abundant number, since it is smaller than the sum of its proper divisors (55950426546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51263506254 is a wasteful number, since it uses less digits than its factorization.

51263506254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795944.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 51263506254 in words is "fifty-one billion, two hundred sixty-three million, five hundred six thousand, two hundred fifty-four".