55615315275 has 72 divisors (see below), whose sum is σ = 109770797136. Its totient is φ = 26743046400.

The previous prime is 55615315271. The next prime is 55615315277. The reversal of 55615315275 is 57251351655.

55615315275 is a `hidden beast` number, since 5 + 5 + 61 + 5 + 315 + 275 = 666.

It is not a de Polignac number, because 55615315275 - 2² = 55615315271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55615315275.

It is not an unprimeable number, because it can be changed into a prime (55615315271) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 95316 + ... + 346865.

Almost surely, 2^55615315275 is an apocalyptic number.

55615315275 is a deficient number, since it is larger than the sum of its proper divisors (54155481861).

55615315275 is a wasteful number, since it uses less digits than its factorization.

55615315275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442253 (or 442245 counting only the distinct ones).

The product of its digits is 787500, while the sum is 45.

The spelling of 55615315275 in words is "fifty-five billion, six hundred fifteen million, three hundred fifteen thousand, two hundred seventy-five".