165299 has 4 divisors (see below), whose sum is σ = 168864. Its totient is φ = 161736.

The previous prime is 165293. The next prime is 165311. The reversal of 165299 is 992561.

165299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (42216).

2¹⁶⁵²⁹⁹ is an apocalyptic number.

165299 is a deficient number, since it is larger than the sum of its proper divisors (3565).

165299 is an equidigital number, since it uses as much as digits as its factorization.

165299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564.

The product of its digits is 4860, while the sum is 32.

The square root of 165299 is about 406.5697972058. The cubic root of 165299 is about 54.8811759800.

It can be divided in two parts, 165 and 299, that added together give a palindrome (464).

The spelling of 165299 in words is "one hundred sixty-five thousand, two hundred ninety-nine".