54565590 has 32 divisors (see below), whose sum is σ = 133747200. Its totient is φ = 14240864.

The previous prime is 54565583. The next prime is 54565607. The reversal of 54565590 is 9556545.

It is a super-2 number, since 2×54565590² = 5954807224096200, which contains 22 as substring.

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, 17940 + ... + 20759.

It is an arithmetic number, because the mean of its divisors is an integer number (4179600).

Almost surely, 2^54565590 is an apocalyptic number.

54565590 is an abundant number, since it is smaller than the sum of its proper divisors (79181610).

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

54565590 is a wasteful number, since it uses less digits than its factorization.

54565590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38756.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 54565590 is about 7386.8525096959. The cubic root of 54565590 is about 379.2913616899.

It can be divided in two parts, 54565 and 590, that added together give a palindrome (55155).

The spelling of 54565590 in words is "fifty-four million, five hundred sixty-five thousand, five hundred ninety".