55272915 has 16 divisors (see below), whose sum is σ = 98263200. Its totient is φ = 29478816.

The previous prime is 55272913. The next prime is 55272977. The reversal of 55272915 is 51927255.

It is not a de Polignac number, because 55272915 - 2¹ = 55272913 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55272915.

It is not an unprimeable number, because it can be changed into a prime (55272913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204580 + ... + 204849.

It is an arithmetic number, because the mean of its divisors is an integer number (6141450).

Almost surely, 2^55272915 is an apocalyptic number.

55272915 is a deficient number, since it is larger than the sum of its proper divisors (42990285).

55272915 is a wasteful number, since it uses less digits than its factorization.

55272915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409443 (or 409437 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 55272915 is about 7434.5756435724. The cubic root of 55272915 is about 380.9232283780.

The spelling of 55272915 in words is "fifty-five million, two hundred seventy-two thousand, nine hundred fifteen".