57056690 has 16 divisors (see below), whose sum is σ = 103940928. Its totient is φ = 22547376.

The previous prime is 57056689. The next prime is 57056693. The reversal of 57056690 is 9665075.

It is a super-2 number, since 2×57056690² = 6510931747512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57056693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33542 + ... + 35201.

It is an arithmetic number, because the mean of its divisors is an integer number (6496308).

Almost surely, 2^57056690 is an apocalyptic number.

57056690 is a deficient number, since it is larger than the sum of its proper divisors (46884238).

57056690 is a wasteful number, since it uses less digits than its factorization.

57056690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68833.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 57056690 is about 7553.5878892087. The cubic root of 57056690 is about 384.9776565433.

The spelling of 57056690 in words is "fifty-seven million, fifty-six thousand, six hundred ninety".