165272179 has 4 divisors (see below), whose sum is σ = 168390576. Its totient is φ = 162153784.

The previous prime is 165272171. The next prime is 165272201. The reversal of 165272179 is 971272561.

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

It is a cyclic number.

It is not a de Polignac number, because 165272179 - 2³ = 165272171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165272171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559119 + ... + 1559224.

It is an arithmetic number, because the mean of its divisors is an integer number (42097644).

Almost surely, 2^165272179 is an apocalyptic number.

165272179 is a deficient number, since it is larger than the sum of its proper divisors (3118397).

165272179 is an equidigital number, since it uses as much as digits as its factorization.

165272179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118396.

The product of its digits is 52920, while the sum is 40.

The square root of 165272179 is about 12855.8227663577. The cubic root of 165272179 is about 548.7820752556.

The spelling of 165272179 in words is "one hundred sixty-five million, two hundred seventy-two thousand, one hundred seventy-nine".