165153775 has 12 divisors (see below), whose sum is σ = 205186024. Its totient is φ = 131868000.

The previous prime is 165153773. The next prime is 165153797. The reversal of 165153775 is 577351561.

It is not a de Polignac number, because 165153775 - 2¹ = 165153773 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 (165153773) 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, 7420 + ... + 19630.

Almost surely, 2^165153775 is an apocalyptic number.

165153775 is a deficient number, since it is larger than the sum of its proper divisors (40032249).

165153775 is a wasteful number, since it uses less digits than its factorization.

165153775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12762 (or 12757 counting only the distinct ones).

The product of its digits is 110250, while the sum is 40.

The square root of 165153775 is about 12851.2168684526. The cubic root of 165153775 is about 548.6509914548.

The spelling of 165153775 in words is "one hundred sixty-five million, one hundred fifty-three thousand, seven hundred seventy-five".