455031491 has 2 divisors, whose sum is σ = 455031492. Its totient is φ = 455031490.

The previous prime is 455031419. The next prime is 455031497. The reversal of 455031491 is 194130554.

Together with previous prime (455031419) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 455031491 - 2¹⁰ = 455030467 is a prime.

It is not a weakly prime, because it can be changed into another prime (455031497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227515745 + 227515746.

It is an arithmetic number, because the mean of its divisors is an integer number (227515746).

Almost surely, 2^455031491 is an apocalyptic number.

455031491 is a deficient number, since it is larger than the sum of its proper divisors (1).

455031491 is an equidigital number, since it uses as much as digits as its factorization.

455031491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 455031491 is about 21331.4671553553. The cubic root of 455031491 is about 769.1549119368.

The spelling of 455031491 in words is "four hundred fifty-five million, thirty-one thousand, four hundred ninety-one".