51531115104200 has 96 divisors (see below), whose sum is σ = 125023750646400. Its totient is φ = 19715498204160.

The previous prime is 51531115104191. The next prime is 51531115104233. The reversal of 51531115104200 is 240151113515.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128383421 + ... + 128784179.

It is an arithmetic number, because the mean of its divisors is an integer number (1302330735900).

Almost surely, 2^{51531115104200} is an apocalyptic number.

51531115104200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51531115104200 is an abundant number, since it is smaller than the sum of its proper divisors (73492635542200).

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

51531115104200 is a wasteful number, since it uses less digits than its factorization.

51531115104200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428751 (or 428742 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 51531115104200 its reverse (240151113515), we get a palindrome (51771266217715).

The spelling of 51531115104200 in words is "fifty-one trillion, five hundred thirty-one billion, one hundred fifteen million, one hundred four thousand, two hundred".