57656090 has 16 divisors (see below), whose sum is σ = 104020200. Its totient is φ = 23009280.

The previous prime is 57656087. The next prime is 57656107. The reversal of 57656090 is 9065675.

It can be written as a sum of positive squares in 4 ways, for example, as 47927929 + 9728161 = 6923^2 + 3119^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1931 + ... + 10910.

Almost surely, 2^57656090 is an apocalyptic number.

57656090 is a deficient number, since it is larger than the sum of its proper divisors (46364110).

57656090 is a wasteful number, since it uses less digits than its factorization.

57656090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13297.

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

The square root of 57656090 is about 7593.1607384540. The cubic root of 57656090 is about 386.3210703489.

The spelling of 57656090 in words is "fifty-seven million, six hundred fifty-six thousand, ninety".