57090591 has 6 divisors (see below), whose sum is σ = 82464200. Its totient is φ = 38060388.

The previous prime is 57090569. The next prime is 57090601. The reversal of 57090591 is 19509075.

It is a happy number.

It is not a de Polignac number, because 57090591 - 2⁵ = 57090559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57090521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3171691 + ... + 3171708.

Almost surely, 2^57090591 is an apocalyptic number.

57090591 is a deficient number, since it is larger than the sum of its proper divisors (25373609).

57090591 is a wasteful number, since it uses less digits than its factorization.

57090591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6343405 (or 6343402 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 36.

The square root of 57090591 is about 7555.8315889120. The cubic root of 57090591 is about 385.0538879987.

The spelling of 57090591 in words is "fifty-seven million, ninety thousand, five hundred ninety-one".