165309275 has 12 divisors (see below), whose sum is σ = 217041912. Its totient is φ = 124467840.

The previous prime is 165309259. The next prime is 165309283. The reversal of 165309275 is 572903561.

It is a happy number.

It is not a de Polignac number, because 165309275 - 2⁴ = 165309259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 194057 + ... + 194906.

It is an arithmetic number, because the mean of its divisors is an integer number (18086826).

Almost surely, 2^165309275 is an apocalyptic number.

165309275 is a deficient number, since it is larger than the sum of its proper divisors (51732637).

165309275 is a wasteful number, since it uses less digits than its factorization.

165309275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388990 (or 388985 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 165309275 is about 12857.2654557647. The cubic root of 165309275 is about 548.8231309595.

The spelling of 165309275 in words is "one hundred sixty-five million, three hundred nine thousand, two hundred seventy-five".