55972315 has 16 divisors (see below), whose sum is σ = 76950720. Its totient is φ = 38286720.

The previous prime is 55972307. The next prime is 55972321. The reversal of 55972315 is 51327955.

It is a happy number.

It is not a de Polignac number, because 55972315 - 2³ = 55972307 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14401 + ... + 17869.

It is an arithmetic number, because the mean of its divisors is an integer number (4809420).

Almost surely, 2^55972315 is an apocalyptic number.

55972315 is a deficient number, since it is larger than the sum of its proper divisors (20978405).

55972315 is a wasteful number, since it uses less digits than its factorization.

55972315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942.

The product of its digits is 47250, while the sum is 37.

The square root of 55972315 is about 7481.4647629993. The cubic root of 55972315 is about 382.5231791384.

The spelling of 55972315 in words is "fifty-five million, nine hundred seventy-two thousand, three hundred fifteen".