55979 has 8 divisors (see below), whose sum is σ = 69888. Its totient is φ = 43560.

The previous prime is 55967. The next prime is 55987. The reversal of 55979 is 97955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-55979 is a prime.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (55949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287 + ... + 440.

It is an arithmetic number, because the mean of its divisors is an integer number (8736).

2⁵⁵⁹⁷⁹ is an apocalyptic number.

55979 is a deficient number, since it is larger than the sum of its proper divisors (13909).

55979 is a wasteful number, since it uses less digits than its factorization.

55979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745.

The product of its digits is 14175, while the sum is 35.

The square root of 55979 is about 236.5988165651. The cubic root of 55979 is about 38.2538407296.

The spelling of 55979 in words is "fifty-five thousand, nine hundred seventy-nine".