55110915 has 16 divisors (see below), whose sum is σ = 97975200. Its totient is φ = 29392416.

The previous prime is 55110899. The next prime is 55110919. The reversal of 55110915 is 51901155.

55110915 is a `hidden beast` number, since 551 + 109 + 1 + 5 = 666.

It is not a de Polignac number, because 55110915 - 2⁴ = 55110899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55110919) 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, 203980 + ... + 204249.

It is an arithmetic number, because the mean of its divisors is an integer number (6123450).

Almost surely, 2^55110915 is an apocalyptic number.

55110915 is a deficient number, since it is larger than the sum of its proper divisors (42864285).

55110915 is a wasteful number, since it uses less digits than its factorization.

55110915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408243 (or 408237 counting only the distinct ones).

The product of its (nonzero) digits is 1125, while the sum is 27.

The square root of 55110915 is about 7423.6726086217. The cubic root of 55110915 is about 380.5507134988.

The spelling of 55110915 in words is "fifty-five million, one hundred ten thousand, nine hundred fifteen".