2155305155 has 16 divisors (see below), whose sum is σ = 2661289344. Its totient is φ = 1674940800.

The previous prime is 2155305059. The next prime is 2155305193. The reversal of 2155305155 is 5515035512.

It is not a de Polignac number, because 2155305155 - 2³⁰ = 1081563331 is a prime.

It is a super-2 number, since 2×2155305155² = 9290680622339148050, which contains 22 as substring.

It is a Duffinian 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, 13499 + ... + 67028.

It is an arithmetic number, because the mean of its divisors is an integer number (166330584).

Almost surely, 2^2155305155 is an apocalyptic number.

2155305155 is a deficient number, since it is larger than the sum of its proper divisors (505984189).

2155305155 is a wasteful number, since it uses less digits than its factorization.

2155305155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80686.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 2155305155 is about 46425.2641888013. The cubic root of 2155305155 is about 1291.7235849401.

The spelling of 2155305155 in words is "two billion, one hundred fifty-five million, three hundred five thousand, one hundred fifty-five".