165455 has 4 divisors (see below), whose sum is σ = 198552. Its totient is φ = 132360.

The previous prime is 165449. The next prime is 165457. The reversal of 165455 is 554561.

165455 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 not a de Polignac number, because 165455 - 2⁶ = 165391 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 16541 + ... + 16550.

It is an arithmetic number, because the mean of its divisors is an integer number (49638).

2¹⁶⁵⁴⁵⁵ is an apocalyptic number.

165455 is a deficient number, since it is larger than the sum of its proper divisors (33097).

165455 is an equidigital number, since it uses as much as digits as its factorization.

165455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33096.

The product of its digits is 3000, while the sum is 26.

The square root of 165455 is about 406.7616009409. The cubic root of 165455 is about 54.8984351519.

It can be divided in two parts, 1 and 65455, that added together give a palindrome (65456).

The spelling of 165455 in words is "one hundred sixty-five thousand, four hundred fifty-five".