455012819 has 2 divisors, whose sum is σ = 455012820. Its totient is φ = 455012818.

The previous prime is 455012797. The next prime is 455012821. The reversal of 455012819 is 918210554.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-455012819 is a prime.

It is a super-2 number, since 2×455012819² = 414073330908653522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 455012821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (455012119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227506409 + 227506410.

It is an arithmetic number, because the mean of its divisors is an integer number (227506410).

Almost surely, 2^455012819 is an apocalyptic number.

455012819 is a deficient number, since it is larger than the sum of its proper divisors (1).

455012819 is an equidigital number, since it uses as much as digits as its factorization.

455012819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 455012819 is about 21331.0294875798. The cubic root of 455012819 is about 769.1443911580.

The spelling of 455012819 in words is "four hundred fifty-five million, twelve thousand, eight hundred nineteen".