55115155055 has 16 divisors (see below), whose sum is σ = 66835281600. Its totient is φ = 43628702208.

The previous prime is 55115155021. The next prime is 55115155091. The reversal of 55115155055 is 55055151155.

It is a cyclic number.

It is not a de Polignac number, because 55115155055 - 2²⁰ = 55114106479 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257009 + ... + 419861.

It is an arithmetic number, because the mean of its divisors is an integer number (4177205100).

Almost surely, 2^55115155055 is an apocalyptic number.

55115155055 is a deficient number, since it is larger than the sum of its proper divisors (11720126545).

55115155055 is a wasteful number, since it uses less digits than its factorization.

55115155055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163570.

The product of its (nonzero) digits is 78125, while the sum is 38.

The spelling of 55115155055 in words is "fifty-five billion, one hundred fifteen million, one hundred fifty-five thousand, fifty-five".