55055979 has 24 divisors (see below), whose sum is σ = 91860912. Its totient is φ = 31403520.

The previous prime is 55055921. The next prime is 55055981. The reversal of 55055979 is 97955055.

55055979 is a `hidden beast` number, since 5 + 50 + 5 + 597 + 9 = 666.

It is not a de Polignac number, because 55055979 - 2⁹ = 55055467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55055999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14674 + ... + 18039.

It is an arithmetic number, because the mean of its divisors is an integer number (3827538).

Almost surely, 2^55055979 is an apocalyptic number.

55055979 is a deficient number, since it is larger than the sum of its proper divisors (36804933).

55055979 is a wasteful number, since it uses less digits than its factorization.

55055979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32747 (or 32744 counting only the distinct ones).

The product of its (nonzero) digits is 354375, while the sum is 45.

The square root of 55055979 is about 7419.9716306735. The cubic root of 55055979 is about 380.4242238287.

The spelling of 55055979 in words is "fifty-five million, fifty-five thousand, nine hundred seventy-nine".