165459 has 8 divisors (see below), whose sum is σ = 252160. Its totient is φ = 94536.

The previous prime is 165457. The next prime is 165463. The reversal of 165459 is 954561.

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

It is not a de Polignac number, because 165459 - 2¹ = 165457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165457) 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, 3919 + ... + 3960.

It is an arithmetic number, because the mean of its divisors is an integer number (31520).

2¹⁶⁵⁴⁵⁹ is an apocalyptic number.

165459 is a deficient number, since it is larger than the sum of its proper divisors (86701).

165459 is an equidigital number, since it uses as much as digits as its factorization.

165459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7889.

The product of its digits is 5400, while the sum is 30.

The square root of 165459 is about 406.7665177961. The cubic root of 165459 is about 54.8988775521.

The spelling of 165459 in words is "one hundred sixty-five thousand, four hundred fifty-nine".