517397539 has 2 divisors, whose sum is σ = 517397540. Its totient is φ = 517397538.

The previous prime is 517397521. The next prime is 517397557. The reversal of 517397539 is 935793715.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (517397521) and next prime (517397557).

It is a cyclic number.

It is not a de Polignac number, because 517397539 - 2⁷ = 517397411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 517397492 and 517397501.

It is not a weakly prime, because it can be changed into another prime (517397509) 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, 258698769 + 258698770.

It is an arithmetic number, because the mean of its divisors is an integer number (258698770).

Almost surely, 2^517397539 is an apocalyptic number.

517397539 is a deficient number, since it is larger than the sum of its proper divisors (1).

517397539 is an equidigital number, since it uses as much as digits as its factorization.

517397539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 893025, while the sum is 49.

The square root of 517397539 is about 22746.3741945832. The cubic root of 517397539 is about 802.8013969973.

The spelling of 517397539 in words is "five hundred seventeen million, three hundred ninety-seven thousand, five hundred thirty-nine".