55979264 has 72 divisors (see below), whose sum is σ = 123719232. Its totient is φ = 25067520.

The previous prime is 55979257. The next prime is 55979333. The reversal of 55979264 is 46297955.

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, 289952 + ... + 290144.

Almost surely, 2^55979264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55979264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61859616).

55979264 is an abundant number, since it is smaller than the sum of its proper divisors (67739968).

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

55979264 is a wasteful number, since it uses less digits than its factorization.

55979264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 309 counting only the distinct ones).

The product of its digits is 680400, while the sum is 47.

The square root of 55979264 is about 7481.9291629900. The cubic root of 55979264 is about 382.5390086521.

The spelling of 55979264 in words is "fifty-five million, nine hundred seventy-nine thousand, two hundred sixty-four".