57105866 has 8 divisors (see below), whose sum is σ = 87748164. Its totient is φ = 27856480.

The previous prime is 57105859. The next prime is 57105877. The reversal of 57105866 is 66850175.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51912025 + 5193841 = 7205^2 + 2279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×57105866² = 6522159863219912, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348125 + ... + 348288.

Almost surely, 2^57105866 is an apocalyptic number.

57105866 is a deficient number, since it is larger than the sum of its proper divisors (30642298).

57105866 is a wasteful number, since it uses less digits than its factorization.

57105866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696456.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 57105866 is about 7556.8423299683. The cubic root of 57105866 is about 385.0882262527.

The spelling of 57105866 in words is "fifty-seven million, one hundred five thousand, eight hundred sixty-six".