55644568 has 32 divisors (see below), whose sum is σ = 120016800. Its totient is φ = 23692032.

The previous prime is 55644551. The next prime is 55644583. The reversal of 55644568 is 86544655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5628 + ... + 11956.

It is an arithmetic number, because the mean of its divisors is an integer number (3750525).

Almost surely, 2^55644568 is an apocalyptic number.

It is an amenable number.

55644568 is an abundant number, since it is smaller than the sum of its proper divisors (64372232).

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

55644568 is a wasteful number, since it uses less digits than its factorization.

55644568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6499 (or 6495 counting only the distinct ones).

The product of its digits is 576000, while the sum is 43.

The square root of 55644568 is about 7459.5286714376. The cubic root of 55644568 is about 381.7750930693.

The spelling of 55644568 in words is "fifty-five million, six hundred forty-four thousand, five hundred sixty-eight".