455813521 has 2 divisors, whose sum is σ = 455813522. Its totient is φ = 455813520.

The previous prime is 455813509. The next prime is 455813531. The reversal of 455813521 is 125318554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383376400 + 72437121 = 19580^2 + 8511^2 .

It is a cyclic number.

It is not a de Polignac number, because 455813521 - 2¹⁵ = 455780753 is a prime.

It is not a weakly prime, because it can be changed into another prime (455813531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227906760 + 227906761.

It is an arithmetic number, because the mean of its divisors is an integer number (227906761).

Almost surely, 2^455813521 is an apocalyptic number.

It is an amenable number.

455813521 is a deficient number, since it is larger than the sum of its proper divisors (1).

455813521 is an equidigital number, since it uses as much as digits as its factorization.

455813521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24000, while the sum is 34.

The square root of 455813521 is about 21349.7897179340. The cubic root of 455813521 is about 769.5952902183.

The spelling of 455813521 in words is "four hundred fifty-five million, eight hundred thirteen thousand, five hundred twenty-one".