56972655 has 12 divisors (see below), whose sum is σ = 98752680. Its totient is φ = 30385392.

The previous prime is 56972653. The next prime is 56972693. The reversal of 56972655 is 55627965.

It is not a de Polignac number, because 56972655 - 2¹ = 56972653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1266059 = 56972655 / (5 + 6 + 9 + 7 + 2 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 56972655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56972653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 632985 + ... + 633074.

It is an arithmetic number, because the mean of its divisors is an integer number (8229390).

Almost surely, 2^56972655 is an apocalyptic number.

56972655 is a deficient number, since it is larger than the sum of its proper divisors (41780025).

56972655 is a wasteful number, since it uses less digits than its factorization.

56972655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266070 (or 1266067 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 56972655 is about 7548.0232511566. The cubic root of 56972655 is about 384.7885610244.

The spelling of 56972655 in words is "fifty-six million, nine hundred seventy-two thousand, six hundred fifty-five".