55972944 has 50 divisors (see below), whose sum is σ = 162005690. Its totient is φ = 18657216.

The previous prime is 55972919. The next prime is 55972951. The reversal of 55972944 is 44927955.

55972944 is a `hidden beast` number, since 559 + 7 + 2 + 94 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32353344 + 23619600 = 5688^2 + 4860^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55972944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20299 + ... + 22890.

Almost surely, 2^55972944 is an apocalyptic number.

55972944 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55972944 is an abundant number, since it is smaller than the sum of its proper divisors (106032746).

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

55972944 is a wasteful number, since it uses less digits than its factorization.

55972944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43209 (or 43194 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 55972944 is about 7481.5068001038. The cubic root of 55972944 is about 382.5246120265.

The spelling of 55972944 in words is "fifty-five million, nine hundred seventy-two thousand, nine hundred forty-four".