55115222545 has 4 divisors (see below), whose sum is σ = 66138267060. Its totient is φ = 44092178032.

The previous prime is 55115222537. The next prime is 55115222581. The reversal of 55115222545 is 54522251155.

55115222545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42100063489 + 13015159056 = 205183^2 + 114084^2 .

It is a cyclic number.

It is not a de Polignac number, because 55115222545 - 2³ = 55115222537 is a prime.

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, 5511522250 + ... + 5511522259.

It is an arithmetic number, because the mean of its divisors is an integer number (16534566765).

Almost surely, 2^55115222545 is an apocalyptic number.

It is an amenable number.

55115222545 is a deficient number, since it is larger than the sum of its proper divisors (11023044515).

55115222545 is a wasteful number, since it uses less digits than its factorization.

55115222545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11023044514.

The product of its digits is 100000, while the sum is 37.

The spelling of 55115222545 in words is "fifty-five billion, one hundred fifteen million, two hundred twenty-two thousand, five hundred forty-five".