495845591 has 2 divisors, whose sum is σ = 495845592. Its totient is φ = 495845590.

The previous prime is 495845563. The next prime is 495845639. The reversal of 495845591 is 195548594.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495845591 is a prime.

It is a super-2 number, since 2×495845591² = 491725700228278562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495845521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247922795 + 247922796.

It is an arithmetic number, because the mean of its divisors is an integer number (247922796).

Almost surely, 2^495845591 is an apocalyptic number.

495845591 is a deficient number, since it is larger than the sum of its proper divisors (1).

495845591 is an equidigital number, since it uses as much as digits as its factorization.

495845591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296000, while the sum is 50.

The square root of 495845591 is about 22267.5905970987. The cubic root of 495845591 is about 791.4961717326.

The spelling of 495845591 in words is "four hundred ninety-five million, eight hundred forty-five thousand, five hundred ninety-one".