165099 has 8 divisors (see below), whose sum is σ = 240192. Its totient is φ = 100040.

The previous prime is 165089. The next prime is 165103. The reversal of 165099 is 990561.

165099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 165099 - 2⁴ = 165083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165049) 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, 2469 + ... + 2534.

It is an arithmetic number, because the mean of its divisors is an integer number (30024).

2¹⁶⁵⁰⁹⁹ is an apocalyptic number.

165099 is a deficient number, since it is larger than the sum of its proper divisors (75093).

165099 is a wasteful number, since it uses less digits than its factorization.

165099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5017.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 165099 is about 406.3237625343. The cubic root of 165099 is about 54.8590329442.

It can be divided in two parts, 16 and 5099, that added together give a palindrome (5115).

The spelling of 165099 in words is "one hundred sixty-five thousand, ninety-nine".