165275523 has 12 divisors (see below), whose sum is σ = 272835888. Its totient is φ = 94443120.

The previous prime is 165275519. The next prime is 165275527. The reversal of 165275523 is 325572561.

165275523 is a `hidden beast` number, since 1 + 65 + 2 + 75 + 523 = 666.

It is an interprime number because it is at equal distance from previous prime (165275519) and next prime (165275527).

It is not a de Polignac number, because 165275523 - 2² = 165275519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165275527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1311648 + ... + 1311773.

It is an arithmetic number, because the mean of its divisors is an integer number (22736324).

Almost surely, 2^165275523 is an apocalyptic number.

165275523 is a deficient number, since it is larger than the sum of its proper divisors (107560365).

165275523 is a wasteful number, since it uses less digits than its factorization.

165275523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623434 (or 2623431 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 165275523 is about 12855.9528234978. The cubic root of 165275523 is about 548.7857764530.

The spelling of 165275523 in words is "one hundred sixty-five million, two hundred seventy-five thousand, five hundred twenty-three".