497258681 has 2 divisors, whose sum is σ = 497258682. Its totient is φ = 497258680.

The previous prime is 497258669. The next prime is 497258683. The reversal of 497258681 is 186852794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495463081 + 1795600 = 22259^2 + 1340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497258681 is a prime.

It is a super-2 number, since 2×497258681² = 494532391659719522, which contains 22 as substring.

Together with 497258683, 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 (497258683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248629340 + 248629341.

It is an arithmetic number, because the mean of its divisors is an integer number (248629341).

Almost surely, 2^497258681 is an apocalyptic number.

It is an amenable number.

497258681 is a deficient number, since it is larger than the sum of its proper divisors (1).

497258681 is an equidigital number, since it uses as much as digits as its factorization.

497258681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 50.

The square root of 497258681 is about 22299.2977692124. The cubic root of 497258681 is about 792.2473427589.

The spelling of 497258681 in words is "four hundred ninety-seven million, two hundred fifty-eight thousand, six hundred eighty-one".