57572730 has 24 divisors (see below), whose sum is σ = 149689332. Its totient is φ = 15352704.

The previous prime is 57572719. The next prime is 57572737. The reversal of 57572730 is 3727575.

57572730 is a `hidden beast` number, since 57 + 572 + 7 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53275401 + 4297329 = 7299^2 + 2073^2 .

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (57572737) 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, 319759 + ... + 319938.

Almost surely, 2^57572730 is an apocalyptic number.

57572730 is an abundant number, since it is smaller than the sum of its proper divisors (92116602).

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

57572730 is a wasteful number, since it uses less digits than its factorization.

57572730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639710 (or 639707 counting only the distinct ones).

The product of its (nonzero) digits is 51450, while the sum is 36.

The square root of 57572730 is about 7587.6696027173. The cubic root of 57572730 is about 386.1347977042.

The spelling of 57572730 in words is "fifty-seven million, five hundred seventy-two thousand, seven hundred thirty".