57561090 has 32 divisors (see below), whose sum is σ = 141362496. Its totient is φ = 14992320.

The previous prime is 57561083. The next prime is 57561109. The reversal of 57561090 is 9016575.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21021 + ... + 23600.

It is an arithmetic number, because the mean of its divisors is an integer number (4417578).

Almost surely, 2^57561090 is an apocalyptic number.

57561090 is an abundant number, since it is smaller than the sum of its proper divisors (83801406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57561090 is a wasteful number, since it uses less digits than its factorization.

57561090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44674.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 57561090 is about 7586.9025300184. The cubic root of 57561090 is about 386.1087731611.

The spelling of 57561090 in words is "fifty-seven million, five hundred sixty-one thousand, ninety".