55635564 has 36 divisors (see below), whose sum is σ = 131594456. Its totient is φ = 18294528.

The previous prime is 55635521. The next prime is 55635581. The reversal of 55635564 is 46553655.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82332 + ... + 83004.

Almost surely, 2^55635564 is an apocalyptic number.

It is an amenable number.

55635564 is an abundant number, since it is smaller than the sum of its proper divisors (75958892).

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

55635564 is a wasteful number, since it uses less digits than its factorization.

55635564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846 (or 761 counting only the distinct ones).

The product of its digits is 270000, while the sum is 39.

The square root of 55635564 is about 7458.9251236354. The cubic root of 55635564 is about 381.7544999339.

The spelling of 55635564 in words is "fifty-five million, six hundred thirty-five thousand, five hundred sixty-four".