455809 has 2 divisors, whose sum is σ = 455810. Its totient is φ = 455808.

The previous prime is 455789. The next prime is 455827. The reversal of 455809 is 908554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451584 + 4225 = 672^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 455809 - 2⁷ = 455681 is a prime.

It is a Chen prime.

455809 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (455849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227904 + 227905.

It is an arithmetic number, because the mean of its divisors is an integer number (227905).

2⁴⁵⁵⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

455809 is a deficient number, since it is larger than the sum of its proper divisors (1).

455809 is an equidigital number, since it uses as much as digits as its factorization.

455809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 455809 is about 675.1362825386. The cubic root of 455809 is about 76.9592745792.

The spelling of 455809 in words is "four hundred fifty-five thousand, eight hundred nine".