520251313 has 2 divisors, whose sum is σ = 520251314. Its totient is φ = 520251312.

The previous prime is 520251307. The next prime is 520251341. The reversal of 520251313 is 313152025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372798864 + 147452449 = 19308^2 + 12143^2 .

It is a cyclic number.

It is not a de Polignac number, because 520251313 - 2¹⁷ = 520120241 is a prime.

It is a super-2 number, since 2×520251313² = 541322857356447938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (520251383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260125656 + 260125657.

It is an arithmetic number, because the mean of its divisors is an integer number (260125657).

Almost surely, 2^520251313 is an apocalyptic number.

It is an amenable number.

520251313 is a deficient number, since it is larger than the sum of its proper divisors (1).

520251313 is an equidigital number, since it uses as much as digits as its factorization.

520251313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 520251313 is about 22809.0182384074. The cubic root of 520251313 is about 804.2746770913.

The spelling of 520251313 in words is "five hundred twenty million, two hundred fifty-one thousand, three hundred thirteen".