55131979204 has 81 divisors (see below), whose sum is σ = 105283022733. Its totient is φ = 25257181536.

The previous prime is 55131979181. The next prime is 55131979207. The reversal of 55131979204 is 40297913155.

The square root of 55131979204 is 234802.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 49332852100 + 5799127104 = 222110^2 + 76152^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55131979207) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 330131529 + ... + 330131695.

Almost surely, 2^55131979204 is an apocalyptic number.

55131979204 is the 234802-nd square number.

It is an amenable number.

55131979204 is a deficient number, since it is larger than the sum of its proper divisors (50151043529).

55131979204 is a wasteful number, since it uses less digits than its factorization.

55131979204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 46.

The spelling of 55131979204 in words is "fifty-five billion, one hundred thirty-one million, nine hundred seventy-nine thousand, two hundred four".