165045204 has 18 divisors (see below), whose sum is σ = 417197690. Its totient is φ = 55015056.

The previous prime is 165045203. The next prime is 165045239. The reversal of 165045204 is 402540561.

165045204 is a `hidden beast` number, since 1 + 650 + 4 + 5 + 2 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 109244304 + 55800900 = 10452^2 + 7470^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165045203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2292259 + ... + 2292330.

Almost surely, 2^165045204 is an apocalyptic number.

It is an amenable number.

165045204 is an abundant number, since it is smaller than the sum of its proper divisors (252152486).

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

165045204 is a wasteful number, since it uses less digits than its factorization.

165045204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4584599 (or 4584594 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 165045204 is about 12846.9920214811. The cubic root of 165045204 is about 548.5307385881.

Adding to 165045204 its reverse (402540561), we get a palindrome (567585765).

The spelling of 165045204 in words is "one hundred sixty-five million, forty-five thousand, two hundred four".