165045 has 8 divisors (see below), whose sum is σ = 264096. Its totient is φ = 88016.

The previous prime is 165041. The next prime is 165047. The reversal of 165045 is 540561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165045 - 2² = 165041 is a prime.

165045 is a lucky number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5487 + ... + 5516.

It is an arithmetic number, because the mean of its divisors is an integer number (33012).

2¹⁶⁵⁰⁴⁵ is an apocalyptic number.

165045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165045 is a deficient number, since it is larger than the sum of its proper divisors (99051).

165045 is a wasteful number, since it uses less digits than its factorization.

165045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 165045 is about 406.2573076266. The cubic root of 165045 is about 54.8530512589.

The spelling of 165045 in words is "one hundred sixty-five thousand, forty-five".