454691591 has 2 divisors, whose sum is σ = 454691592. Its totient is φ = 454691590.

The previous prime is 454691581. The next prime is 454691593. The reversal of 454691591 is 195196454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 454691591 - 2¹⁸ = 454429447 is a prime.

It is a super-2 number, since 2×454691591² = 413488885852222562, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 454691593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454691593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227345795 + 227345796.

It is an arithmetic number, because the mean of its divisors is an integer number (227345796).

Almost surely, 2^454691591 is an apocalyptic number.

454691591 is a deficient number, since it is larger than the sum of its proper divisors (1).

454691591 is an equidigital number, since it uses as much as digits as its factorization.

454691591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 44.

The square root of 454691591 is about 21323.4985637911. The cubic root of 454691591 is about 768.9633494606.

The spelling of 454691591 in words is "four hundred fifty-four million, six hundred ninety-one thousand, five hundred ninety-one".