57089681 has 16 divisors (see below), whose sum is σ = 64266048. Its totient is φ = 50265600.

The previous prime is 57089677. The next prime is 57089687. The reversal of 57089681 is 18698075.

It is a happy number.

It is not a de Polignac number, because 57089681 - 2² = 57089677 is a prime.

It is a super-2 number, since 2×57089681² = 6518463353363522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (57089687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64361 + ... + 65241.

It is an arithmetic number, because the mean of its divisors is an integer number (4016628).

Almost surely, 2^57089681 is an apocalyptic number.

It is an amenable number.

57089681 is a deficient number, since it is larger than the sum of its proper divisors (7176367).

57089681 is a wasteful number, since it uses less digits than its factorization.

57089681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 57089681 is about 7555.7713702838. The cubic root of 57089681 is about 385.0518421222.

The spelling of 57089681 in words is "fifty-seven million, eighty-nine thousand, six hundred eighty-one".