57115018 has 4 divisors (see below), whose sum is σ = 85672530. Its totient is φ = 28557508.

The previous prime is 57114997. The next prime is 57115031. The reversal of 57115018 is 81051175.

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

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 16703569 = 6357^2 + 4087^2 .

It is a super-2 number, since 2×57115018² = 6524250562280648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14278753 + ... + 14278756.

Almost surely, 2^57115018 is an apocalyptic number.

57115018 is a deficient number, since it is larger than the sum of its proper divisors (28557512).

57115018 is a wasteful number, since it uses less digits than its factorization.

57115018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28557511.

The product of its (nonzero) digits is 1400, while the sum is 28.

The square root of 57115018 is about 7557.4478496381. The cubic root of 57115018 is about 385.1087970478.

The spelling of 57115018 in words is "fifty-seven million, one hundred fifteen thousand, eighteen".