520202317 has 2 divisors, whose sum is σ = 520202318. Its totient is φ = 520202316.

The previous prime is 520202297. The next prime is 520202321. The reversal of 520202317 is 713202025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456505956 + 63696361 = 21366^2 + 7981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520202317 is a prime.

It is a super-2 number, since 2×520202317² = 541220901224336978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520202117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260101158 + 260101159.

It is an arithmetic number, because the mean of its divisors is an integer number (260101159).

Almost surely, 2^520202317 is an apocalyptic number.

It is an amenable number.

520202317 is a deficient number, since it is larger than the sum of its proper divisors (1).

520202317 is an equidigital number, since it uses as much as digits as its factorization.

520202317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 520202317 is about 22807.9441642600. The cubic root of 520202317 is about 804.2494280894.

The spelling of 520202317 in words is "five hundred twenty million, two hundred two thousand, three hundred seventeen".