455564819 has 2 divisors, whose sum is σ = 455564820. Its totient is φ = 455564818.

The previous prime is 455564789. The next prime is 455564869. The reversal of 455564819 is 918465554.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 455564819 - 2¹² = 455560723 is a prime.

It is a super-2 number, since 2×455564819² = 415078608621005522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (455564869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227782409 + 227782410.

It is an arithmetic number, because the mean of its divisors is an integer number (227782410).

Almost surely, 2^455564819 is an apocalyptic number.

455564819 is a deficient number, since it is larger than the sum of its proper divisors (1).

455564819 is an equidigital number, since it uses as much as digits as its factorization.

455564819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864000, while the sum is 47.

The square root of 455564819 is about 21343.9644630514. The cubic root of 455564819 is about 769.4552953153.

The spelling of 455564819 in words is "four hundred fifty-five million, five hundred sixty-four thousand, eight hundred nineteen".