57511940 has 24 divisors (see below), whose sum is σ = 121080960. Its totient is φ = 22946528.

The previous prime is 57511919. The next prime is 57511967. The reversal of 57511940 is 4911575.

It is a junction number, because it is equal to n+sod(n) for n = 57511897 and 57511906.

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, 4949 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (5045040).

Almost surely, 2^57511940 is an apocalyptic number.

It is an amenable number.

57511940 is an abundant number, since it is smaller than the sum of its proper divisors (63569020).

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

57511940 is a wasteful number, since it uses less digits than its factorization.

57511940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291 (or 7289 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 57511940 is about 7583.6627034699. The cubic root of 57511940 is about 385.9988456031.

The spelling of 57511940 in words is "fifty-seven million, five hundred eleven thousand, nine hundred forty".