2170056155 has 16 divisors (see below), whose sum is σ = 2618269920. Its totient is φ = 1726603008.

The previous prime is 2170056107. The next prime is 2170056173. The reversal of 2170056155 is 5516500712.

2170056155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2170056155 - 2²⁰ = 2169007579 is a prime.

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, 905639 + ... + 908031.

It is an arithmetic number, because the mean of its divisors is an integer number (163641870).

Almost surely, 2^2170056155 is an apocalyptic number.

2170056155 is a deficient number, since it is larger than the sum of its proper divisors (448213765).

2170056155 is a wasteful number, since it uses less digits than its factorization.

2170056155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310.

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 2170056155 is about 46583.8615295040. The cubic root of 2170056155 is about 1294.6637579056.

Adding to 2170056155 its reverse (5516500712), we get a palindrome (7686556867).

The spelling of 2170056155 in words is "two billion, one hundred seventy million, fifty-six thousand, one hundred fifty-five".