516347917 has 2 divisors, whose sum is σ = 516347918. Its totient is φ = 516347916.

The previous prime is 516347893. The next prime is 516347939. The reversal of 516347917 is 719743615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 509224356 + 7123561 = 22566^2 + 2669^2 .

It is a cyclic number.

It is not a de Polignac number, because 516347917 - 2¹⁹ = 515823629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516347947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258173958 + 258173959.

It is an arithmetic number, because the mean of its divisors is an integer number (258173959).

Almost surely, 2^516347917 is an apocalyptic number.

It is an amenable number.

516347917 is a deficient number, since it is larger than the sum of its proper divisors (1).

516347917 is an equidigital number, since it uses as much as digits as its factorization.

516347917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 516347917 is about 22723.2901887029. The cubic root of 516347917 is about 802.2581599985.

The spelling of 516347917 in words is "five hundred sixteen million, three hundred forty-seven thousand, nine hundred seventeen".