55979328 has 28 divisors (see below), whose sum is σ = 148112480. Its totient is φ = 18659712.

The previous prime is 55979257. The next prime is 55979333. The reversal of 55979328 is 82397955.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 145588 + ... + 145971.

Almost surely, 2^55979328 is an apocalyptic number.

It is an amenable number.

55979328 is an abundant number, since it is smaller than the sum of its proper divisors (92133152).

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

55979328 is a wasteful number, since it uses less digits than its factorization.

55979328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291574 (or 291564 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 55979328 is about 7481.9334399606. The cubic root of 55979328 is about 382.5391544352.

The spelling of 55979328 in words is "fifty-five million, nine hundred seventy-nine thousand, three hundred twenty-eight".