455921 has 2 divisors, whose sum is σ = 455922. Its totient is φ = 455920.

The previous prime is 455899. The next prime is 455933. The reversal of 455921 is 129554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 429025 + 26896 = 655^2 + 164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455921 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 455921.

It is not a weakly prime, because it can be changed into another prime (455941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227960 + 227961.

It is an arithmetic number, because the mean of its divisors is an integer number (227961).

2⁴⁵⁵⁹²¹ is an apocalyptic number.

It is an amenable number.

455921 is a deficient number, since it is larger than the sum of its proper divisors (1).

455921 is an equidigital number, since it uses as much as digits as its factorization.

455921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 455921 is about 675.2192236600. The cubic root of 455921 is about 76.9655774625.

The spelling of 455921 in words is "four hundred fifty-five thousand, nine hundred twenty-one".