55666344 has 16 divisors (see below), whose sum is σ = 139165920. Its totient is φ = 18555440.

The previous prime is 55666339. The next prime is 55666361. The reversal of 55666344 is 44366655.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159692 + ... + 1159739.

It is an arithmetic number, because the mean of its divisors is an integer number (8697870).

Almost surely, 2^55666344 is an apocalyptic number.

It is an amenable number.

55666344 is an abundant number, since it is smaller than the sum of its proper divisors (83499576).

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

55666344 is a wasteful number, since it uses less digits than its factorization.

55666344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319440 (or 2319436 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The square root of 55666344 is about 7460.9881383098. The cubic root of 55666344 is about 381.8248879878.

The spelling of 55666344 in words is "fifty-five million, six hundred sixty-six thousand, three hundred forty-four".