57427929 has 12 divisors (see below), whose sum is σ = 89332516. Its totient is φ = 35340192.

The previous prime is 57427913. The next prime is 57427939. The reversal of 57427929 is 92972475.

57427929 is a `hidden beast` number, since 574 + 2 + 79 + 2 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5198400 + 52229529 = 2280^2 + 7227^2 .

It is not a de Polignac number, because 57427929 - 2⁴ = 57427913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57427939) 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, 245302 + ... + 245535.

Almost surely, 2^57427929 is an apocalyptic number.

It is an amenable number.

57427929 is a deficient number, since it is larger than the sum of its proper divisors (31904587).

57427929 is a wasteful number, since it uses less digits than its factorization.

57427929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490856 (or 490853 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 57427929 is about 7578.1217329890. The cubic root of 57427929 is about 385.8108037708.

The spelling of 57427929 in words is "fifty-seven million, four hundred twenty-seven thousand, nine hundred twenty-nine".