57666252 has 24 divisors (see below), whose sum is σ = 153776896. Its totient is φ = 16476048.

The previous prime is 57666247. The next prime is 57666299. The reversal of 57666252 is 25266675.

It is a self number, because there is not a number n which added to its sum of digits gives 57666252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343168 + ... + 343335.

Almost surely, 2^57666252 is an apocalyptic number.

It is an amenable number.

57666252 is an abundant number, since it is smaller than the sum of its proper divisors (96110644).

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

57666252 is a wasteful number, since it uses less digits than its factorization.

57666252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686517 (or 686515 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 57666252 is about 7593.8298637776. The cubic root of 57666252 is about 386.3437656334.

The spelling of 57666252 in words is "fifty-seven million, six hundred sixty-six thousand, two hundred fifty-two".