455623 has 4 divisors (see below), whose sum is σ = 520720. Its totient is φ = 390528.

The previous prime is 455603. The next prime is 455627. The reversal of 455623 is 326554.

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-455623 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 (455627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32538 + ... + 32551.

It is an arithmetic number, because the mean of its divisors is an integer number (130180).

455623 is a Friedman number, since it can be written as 45^(6-3)*5-2, using all its digits and the basic arithmetic operations.

2⁴⁵⁵⁶²³ is an apocalyptic number.

455623 is a deficient number, since it is larger than the sum of its proper divisors (65097).

455623 is an equidigital number, since it uses as much as digits as its factorization.

455623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65096.

The product of its digits is 3600, while the sum is 25.

The square root of 455623 is about 674.9985185169. The cubic root of 455623 is about 76.9488050093.

The spelling of 455623 in words is "four hundred fifty-five thousand, six hundred twenty-three".