51263506252 has 48 divisors (see below), whose sum is σ = 108295677952. Its totient is φ = 20766896640.

The previous prime is 51263506243. The next prime is 51263506267. The reversal of 51263506252 is 25260536215.

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, 649413 + ... + 724060.

Almost surely, 2^51263506252 is an apocalyptic number.

It is an amenable number.

51263506252 is an abundant number, since it is smaller than the sum of its proper divisors (57032171700).

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

51263506252 is a wasteful number, since it uses less digits than its factorization.

51263506252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373558 (or 1373556 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 51263506252 in words is "fifty-one billion, two hundred sixty-three million, five hundred six thousand, two hundred fifty-two".