165045544 has 16 divisors (see below), whose sum is σ = 311721300. Its totient is φ = 81919872.

The previous prime is 165045527. The next prime is 165045553. The reversal of 165045544 is 445540561.

It can be written as a sum of positive squares in 2 ways, for example, as 162256644 + 2788900 = 12738^2 + 1670^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74199 + ... + 76390.

Almost surely, 2^165045544 is an apocalyptic number.

It is an amenable number.

165045544 is a deficient number, since it is larger than the sum of its proper divisors (146675756).

165045544 is a wasteful number, since it uses less digits than its factorization.

165045544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150732 (or 150728 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 165045544 is about 12847.0052541439. The cubic root of 165045544 is about 548.5311152533.

The spelling of 165045544 in words is "one hundred sixty-five million, forty-five thousand, five hundred forty-four".