57020056 has 16 divisors (see below), whose sum is σ = 107209440. Its totient is φ = 28430880.

The previous prime is 57020039. The next prime is 57020099. The reversal of 57020056 is 65002075.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 57020056.

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, 6775 + ... + 12646.

It is an arithmetic number, because the mean of its divisors is an integer number (6700590).

Almost surely, 2^57020056 is an apocalyptic number.

It is an amenable number.

57020056 is a deficient number, since it is larger than the sum of its proper divisors (50189384).

57020056 is a wasteful number, since it uses less digits than its factorization.

57020056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19794 (or 19790 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 57020056 is about 7551.1625595004. The cubic root of 57020056 is about 384.8952455766.

The spelling of 57020056 in words is "fifty-seven million, twenty thousand, fifty-six".