156551155 has 4 divisors (see below), whose sum is σ = 187861392. Its totient is φ = 125240920.

The previous prime is 156551123. The next prime is 156551173. The reversal of 156551155 is 551155651.

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

It is not a de Polignac number, because 156551155 - 2⁵ = 156551123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156551155.

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, 15655111 + ... + 15655120.

It is an arithmetic number, because the mean of its divisors is an integer number (46965348).

Almost surely, 2^156551155 is an apocalyptic number.

156551155 is a deficient number, since it is larger than the sum of its proper divisors (31310237).

156551155 is an equidigital number, since it uses as much as digits as its factorization.

156551155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31310236.

The product of its digits is 18750, while the sum is 34.

The square root of 156551155 is about 12512.0404011496. The cubic root of 156551155 is about 538.9544871118.

The spelling of 156551155 in words is "one hundred fifty-six million, five hundred fifty-one thousand, one hundred fifty-five".