164727155 has 4 divisors (see below), whose sum is σ = 197672592. Its totient is φ = 131781720.

The previous prime is 164727139. The next prime is 164727181. The reversal of 164727155 is 551727461.

164727155 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 is not a de Polignac number, because 164727155 - 2⁴ = 164727139 is a prime.

It is a Duffinian number.

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, 16472711 + ... + 16472720.

It is an arithmetic number, because the mean of its divisors is an integer number (49418148).

Almost surely, 2^164727155 is an apocalyptic number.

164727155 is a deficient number, since it is larger than the sum of its proper divisors (32945437).

164727155 is an equidigital number, since it uses as much as digits as its factorization.

164727155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32945436.

The product of its digits is 58800, while the sum is 38.

The square root of 164727155 is about 12834.6077072889. The cubic root of 164727155 is about 548.1781648034.

The spelling of 164727155 in words is "one hundred sixty-four million, seven hundred twenty-seven thousand, one hundred fifty-five".