57257656 has 32 divisors (see below), whose sum is σ = 110341440. Its totient is φ = 27841408.

The previous prime is 57257647. The next prime is 57257657. The reversal of 57257656 is 65675275.

It is a super-2 number, since 2×57257656² = 6556878341228672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57257657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73686 + ... + 74458.

It is an arithmetic number, because the mean of its divisors is an integer number (3448170).

Almost surely, 2^57257656 is an apocalyptic number.

It is an amenable number.

57257656 is a deficient number, since it is larger than the sum of its proper divisors (53083784).

57257656 is a wasteful number, since it uses less digits than its factorization.

57257656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023 (or 1019 counting only the distinct ones).

The product of its digits is 441000, while the sum is 43.

The square root of 57257656 is about 7566.8788810182. The cubic root of 57257656 is about 385.4291184264.

The spelling of 57257656 in words is "fifty-seven million, two hundred fifty-seven thousand, six hundred fifty-six".