57555057 has 16 divisors (see below), whose sum is σ = 89494400. Its totient is φ = 32888016.

The previous prime is 57555049. The next prime is 57555059. The reversal of 57555057 is 75055575.

It is not a de Polignac number, because 57555057 - 2³ = 57555049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57555059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26938 + ... + 28995.

It is an arithmetic number, because the mean of its divisors is an integer number (5593400).

Almost surely, 2^57555057 is an apocalyptic number.

It is an amenable number.

57555057 is a deficient number, since it is larger than the sum of its proper divisors (31939343).

57555057 is an equidigital number, since it uses as much as digits as its factorization.

57555057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55957 (or 55943 counting only the distinct ones).

The product of its (nonzero) digits is 153125, while the sum is 39.

The square root of 57555057 is about 7586.5049265126. The cubic root of 57555057 is about 386.0952832867.

The spelling of 57555057 in words is "fifty-seven million, five hundred fifty-five thousand, fifty-seven".