520713497 has 2 divisors, whose sum is σ = 520713498. Its totient is φ = 520713496.

The previous prime is 520713493. The next prime is 520713511. The reversal of 520713497 is 794317025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520569856 + 143641 = 22816^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 520713497 - 2² = 520713493 is a prime.

It is a super-2 number, since 2×520713497² = 542285091915938018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520713497.

It is not a weakly prime, because it can be changed into another prime (520713493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260356748 + 260356749.

It is an arithmetic number, because the mean of its divisors is an integer number (260356749).

Almost surely, 2^520713497 is an apocalyptic number.

It is an amenable number.

520713497 is a deficient number, since it is larger than the sum of its proper divisors (1).

520713497 is an equidigital number, since it uses as much as digits as its factorization.

520713497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 520713497 is about 22819.1475958240. The cubic root of 520713497 is about 804.5127753940.

The spelling of 520713497 in words is "five hundred twenty million, seven hundred thirteen thousand, four hundred ninety-seven".