57085867 has 4 divisors (see below), whose sum is σ = 57324960. Its totient is φ = 56846776.

The previous prime is 57085859. The next prime is 57085901. The reversal of 57085867 is 76858075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57085867 - 2³ = 57085859 is a prime.

It is a super-2 number, since 2×57085867² = 6517592422283378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57085837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119188 + ... + 119665.

It is an arithmetic number, because the mean of its divisors is an integer number (14331240).

Almost surely, 2^57085867 is an apocalyptic number.

57085867 is a deficient number, since it is larger than the sum of its proper divisors (239093).

57085867 is a wasteful number, since it uses less digits than its factorization.

57085867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239092.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 57085867 is about 7555.5189762186. The cubic root of 57085867 is about 385.0432671900.

The spelling of 57085867 in words is "fifty-seven million, eighty-five thousand, eight hundred sixty-seven".