56440590 has 32 divisors (see below), whose sum is σ = 135940896. Its totient is φ = 14997120.

The previous prime is 56440547. The next prime is 56440603. The reversal of 56440590 is 9504465.

It is a congruent number.

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, 5580 + ... + 12000.

It is an arithmetic number, because the mean of its divisors is an integer number (4248153).

Almost surely, 2^56440590 is an apocalyptic number.

56440590 is an abundant number, since it is smaller than the sum of its proper divisors (79500306).

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

56440590 is a wasteful number, since it uses less digits than its factorization.

56440590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6724.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 56440590 is about 7512.6952553661. The cubic root of 56440590 is about 383.5869718157.

The spelling of 56440590 in words is "fifty-six million, four hundred forty thousand, five hundred ninety".