165257072 has 20 divisors (see below), whose sum is σ = 322526976. Its totient is φ = 82024320.

The previous prime is 165256979. The next prime is 165257077. The reversal of 165257072 is 270752561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165257077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35504 + ... + 39887.

Almost surely, 2^165257072 is an apocalyptic number.

It is an amenable number.

165257072 is a deficient number, since it is larger than the sum of its proper divisors (157269904).

165257072 is a wasteful number, since it uses less digits than its factorization.

165257072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75536 (or 75530 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 165257072 is about 12855.2351981595. The cubic root of 165257072 is about 548.7653539428.

The spelling of 165257072 in words is "one hundred sixty-five million, two hundred fifty-seven thousand, seventy-two".