51020525532 has 12 divisors (see below), whose sum is σ = 119047892936. Its totient is φ = 17006841840.

The previous prime is 51020525513. The next prime is 51020525581. The reversal of 51020525532 is 23552502015.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51020525532² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51020525532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2125855219 + ... + 2125855242.

Almost surely, 2^51020525532 is an apocalyptic number.

It is an amenable number.

51020525532 is an abundant number, since it is smaller than the sum of its proper divisors (68027367404).

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

51020525532 is a wasteful number, since it uses less digits than its factorization.

51020525532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251710468 (or 4251710466 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 51020525532 in words is "fifty-one billion, twenty million, five hundred twenty-five thousand, five hundred thirty-two".