497239517 has 2 divisors, whose sum is σ = 497239518. Its totient is φ = 497239516.

The previous prime is 497239499. The next prime is 497239531. The reversal of 497239517 is 715932794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273108676 + 224130841 = 16526^2 + 14971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497239517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497239117) 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, 248619758 + 248619759.

It is an arithmetic number, because the mean of its divisors is an integer number (248619759).

Almost surely, 2^497239517 is an apocalyptic number.

It is an amenable number.

497239517 is a deficient number, since it is larger than the sum of its proper divisors (1).

497239517 is an equidigital number, since it uses as much as digits as its factorization.

497239517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 47.

The square root of 497239517 is about 22298.8680654422. The cubic root of 497239517 is about 792.2371650762.

The spelling of 497239517 in words is "four hundred ninety-seven million, two hundred thirty-nine thousand, five hundred seventeen".