165272173 has 16 divisors (see below), whose sum is σ = 183790656. Its totient is φ = 147363840.

The previous prime is 165272171. The next prime is 165272201. The reversal of 165272173 is 371272561.

It is a cyclic number.

It is not a de Polignac number, because 165272173 - 2¹ = 165272171 is a prime.

It is a Duffinian number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 142765 + ... + 143917.

It is an arithmetic number, because the mean of its divisors is an integer number (11486916).

Almost surely, 2^165272173 is an apocalyptic number.

It is an amenable number.

165272173 is a deficient number, since it is larger than the sum of its proper divisors (18518483).

165272173 is a wasteful number, since it uses less digits than its factorization.

165272173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

The product of its digits is 17640, while the sum is 34.

The square root of 165272173 is about 12855.8225330004. The cubic root of 165272173 is about 548.7820686147.

The spelling of 165272173 in words is "one hundred sixty-five million, two hundred seventy-two thousand, one hundred seventy-three".