517320007 has 2 divisors, whose sum is σ = 517320008. Its totient is φ = 517320006.

The previous prime is 517319983. The next prime is 517320017. The reversal of 517320007 is 700023715.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517320007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517320017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258660003 + 258660004.

It is an arithmetic number, because the mean of its divisors is an integer number (258660004).

Almost surely, 2^517320007 is an apocalyptic number.

517320007 is a deficient number, since it is larger than the sum of its proper divisors (1).

517320007 is an equidigital number, since it uses as much as digits as its factorization.

517320007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 517320007 is about 22744.6698591120. The cubic root of 517320007 is about 802.7612950753.

The spelling of 517320007 in words is "five hundred seventeen million, three hundred twenty thousand, seven".