497512991 has 2 divisors, whose sum is σ = 497512992. Its totient is φ = 497512990.

The previous prime is 497512987. The next prime is 497513089. The reversal of 497512991 is 199215794.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 497512991 - 2² = 497512987 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497412991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248756495 + 248756496.

It is an arithmetic number, because the mean of its divisors is an integer number (248756496).

Almost surely, 2^497512991 is an apocalyptic number.

497512991 is a deficient number, since it is larger than the sum of its proper divisors (1).

497512991 is an equidigital number, since it uses as much as digits as its factorization.

497512991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 47.

The square root of 497512991 is about 22304.9992378390. Note that the first 3 decimals coincide. The cubic root of 497512991 is about 792.3823778305.

The spelling of 497512991 in words is "four hundred ninety-seven million, five hundred twelve thousand, nine hundred ninety-one".