165115272 has 32 divisors (see below), whose sum is σ = 471758400. Its totient is φ = 47175744.

The previous prime is 165115267. The next prime is 165115289. The reversal of 165115272 is 272511561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491247 + ... + 491582.

It is an arithmetic number, because the mean of its divisors is an integer number (14742450).

Almost surely, 2^165115272 is an apocalyptic number.

165115272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165115272 is an abundant number, since it is smaller than the sum of its proper divisors (306643128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165115272 is a wasteful number, since it uses less digits than its factorization.

165115272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982845 (or 982841 counting only the distinct ones).

The product of its digits is 4200, while the sum is 30.

The square root of 165115272 is about 12849.7187517860. The cubic root of 165115272 is about 548.6083516969.

The spelling of 165115272 in words is "one hundred sixty-five million, one hundred fifteen thousand, two hundred seventy-two".