55990608 has 40 divisors (see below), whose sum is σ = 144940128. Its totient is φ = 18625152.

The previous prime is 55990607. The next prime is 55990609. The reversal of 55990608 is 80609955.

It is an interprime number because it is at equal distance from previous prime (55990607) and next prime (55990609).

It is a self number, because there is not a number n which added to its sum of digits gives 55990608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55990603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31635 + ... + 33357.

Almost surely, 2^55990608 is an apocalyptic number.

It is an amenable number.

55990608 is an abundant number, since it is smaller than the sum of its proper divisors (88949520).

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

55990608 is a wasteful number, since it uses less digits than its factorization.

55990608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 55990608 is about 7482.6872178383. The cubic root of 55990608 is about 382.5648469662.

The spelling of 55990608 in words is "fifty-five million, nine hundred ninety thousand, six hundred eight".