57520764 has 36 divisors (see below), whose sum is σ = 166171824. Its totient is φ = 16434432.

The previous prime is 57520763. The next prime is 57520777. The reversal of 57520764 is 46702575.

57520764 is a `hidden beast` number, since 575 + 20 + 7 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×57520764² = 6617276582287392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57520763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113877 + ... + 114380.

It is an arithmetic number, because the mean of its divisors is an integer number (4615884).

Almost surely, 2^57520764 is an apocalyptic number.

It is an amenable number.

57520764 is an abundant number, since it is smaller than the sum of its proper divisors (108651060).

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

57520764 is a wasteful number, since it uses less digits than its factorization.

57520764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228274 (or 228269 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 57520764 is about 7584.2444580855. The cubic root of 57520764 is about 386.0185857338.

The spelling of 57520764 in words is "fifty-seven million, five hundred twenty thousand, seven hundred sixty-four".