165044 has 24 divisors (see below), whose sum is σ = 327936. Its totient is φ = 72600.

The previous prime is 165041. The next prime is 165047. The reversal of 165044 is 440561.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (165041) and next prime (165047).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5309 + ... + 5339.

It is an arithmetic number, because the mean of its divisors is an integer number (13664).

2¹⁶⁵⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

165044 is a deficient number, since it is larger than the sum of its proper divisors (162892).

165044 is a wasteful number, since it uses less digits than its factorization.

165044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 165044 is about 406.2560768776. The cubic root of 165044 is about 54.8529404746.

The spelling of 165044 in words is "one hundred sixty-five thousand, forty-four".