55645604 has 24 divisors (see below), whose sum is σ = 117149760. Its totient is φ = 22592736.

The previous prime is 55645591. The next prime is 55645621. The reversal of 55645604 is 40654655.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51767 + ... + 52830.

It is an arithmetic number, because the mean of its divisors is an integer number (4881240).

Almost surely, 2^55645604 is an apocalyptic number.

It is an amenable number.

55645604 is an abundant number, since it is smaller than the sum of its proper divisors (61504156).

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

55645604 is a wasteful number, since it uses less digits than its factorization.

55645604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104627 (or 104625 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 55645604 is about 7459.5981124991. The cubic root of 55645604 is about 381.7774623723. Note that the first 3 decimals are identical.

The spelling of 55645604 in words is "fifty-five million, six hundred forty-five thousand, six hundred four".