57257726056 has 32 divisors (see below), whose sum is σ = 107704598400. Its totient is φ = 28536651520.

The previous prime is 57257726021. The next prime is 57257726069. The reversal of 57257726056 is 65062775275.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 57257725994 and 57257726012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3229536 + ... + 3247216.

It is an arithmetic number, because the mean of its divisors is an integer number (3365768700).

Almost surely, 2^57257726056 is an apocalyptic number.

It is an amenable number.

57257726056 is a deficient number, since it is larger than the sum of its proper divisors (50446872344).

57257726056 is a wasteful number, since it uses less digits than its factorization.

57257726056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18969 (or 18965 counting only the distinct ones).

The product of its (nonzero) digits is 6174000, while the sum is 52.

The spelling of 57257726056 in words is "fifty-seven billion, two hundred fifty-seven million, seven hundred twenty-six thousand, fifty-six".