165144265 has 48 divisors (see below), whose sum is σ = 237695040. Its totient is φ = 109175040.

The previous prime is 165144253. The next prime is 165144271. The reversal of 165144265 is 562441561.

It is not a de Polignac number, because 165144265 - 2⁹ = 165143753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165144265.

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 47 ways as a sum of consecutive naturals, for example, 1013074 + ... + 1013236.

It is an arithmetic number, because the mean of its divisors is an integer number (4951980).

Almost surely, 2^165144265 is an apocalyptic number.

It is an amenable number.

165144265 is a deficient number, since it is larger than the sum of its proper divisors (72550775).

165144265 is a wasteful number, since it uses less digits than its factorization.

165144265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 301 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 165144265 is about 12850.8468592541. The cubic root of 165144265 is about 548.6404603179.

The spelling of 165144265 in words is "one hundred sixty-five million, one hundred forty-four thousand, two hundred sixty-five".