57409590 has 64 divisors (see below), whose sum is σ = 158505984. Its totient is φ = 13035648.

The previous prime is 57409579. The next prime is 57409619. The reversal of 57409590 is 9590475.

It is a super-2 number, since 2×57409590² = 6591722047936200, which contains 22 as substring.

It is a Curzon number.

It is a zygodrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34252 + ... + 35888.

It is an arithmetic number, because the mean of its divisors is an integer number (2476656).

Almost surely, 2^57409590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57409590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79252992).

57409590 is an abundant number, since it is smaller than the sum of its proper divisors (101096394).

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

57409590 is a wasteful number, since it uses less digits than its factorization.

57409590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 57409590 is about 7576.9116399757. The cubic root of 57409590 is about 385.7697312025.

The spelling of 57409590 in words is "fifty-seven million, four hundred nine thousand, five hundred ninety".