165504522 has 16 divisors (see below), whose sum is σ = 331915392. Its totient is φ = 55017120.

The previous prime is 165504491. The next prime is 165504523. The reversal of 165504522 is 225405561.

165504522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 165504522.

It is not an unprimeable number, because it can be changed into a prime (165504523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35379 + ... + 39782.

It is an arithmetic number, because the mean of its divisors is an integer number (20744712).

Almost surely, 2^165504522 is an apocalyptic number.

165504522 is an abundant number, since it is smaller than the sum of its proper divisors (166410870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165504522 is a wasteful number, since it uses less digits than its factorization.

165504522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75533.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 165504522 is about 12864.8560815891. The cubic root of 165504522 is about 549.0391178526.

The spelling of 165504522 in words is "one hundred sixty-five million, five hundred four thousand, five hundred twenty-two".