55116155 has 4 divisors (see below), whose sum is σ = 66139392. Its totient is φ = 44092920.

The previous prime is 55116133. The next prime is 55116161. The reversal of 55116155 is 55161155.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55116155 - 2⁸ = 55115899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5511611 + ... + 5511620.

It is an arithmetic number, because the mean of its divisors is an integer number (16534848).

Almost surely, 2^55116155 is an apocalyptic number.

55116155 is a deficient number, since it is larger than the sum of its proper divisors (11023237).

55116155 is a wasteful number, since it uses less digits than its factorization.

55116155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11023236.

The product of its digits is 3750, while the sum is 29.

The square root of 55116155 is about 7424.0255252794. The cubic root of 55116155 is about 380.5627741619.

It can be divided in two parts, 55 and 116155, that multiplied together give a triangular number (6388525 = T₃₅₇₄).

The spelling of 55116155 in words is "fifty-five million, one hundred sixteen thousand, one hundred fifty-five".