520319797 has 2 divisors, whose sum is σ = 520319798. Its totient is φ = 520319796.

The previous prime is 520319783. The next prime is 520319801. The reversal of 520319797 is 797913025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 419799121 + 100520676 = 20489^2 + 10026^2 .

It is a cyclic number.

It is not a de Polignac number, because 520319797 - 2⁷ = 520319669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520319297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260159898 + 260159899.

It is an arithmetic number, because the mean of its divisors is an integer number (260159899).

Almost surely, 2^520319797 is an apocalyptic number.

It is an amenable number.

520319797 is a deficient number, since it is larger than the sum of its proper divisors (1).

520319797 is an equidigital number, since it uses as much as digits as its factorization.

520319797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 520319797 is about 22810.5194373123. The cubic root of 520319797 is about 804.3099661455.

The spelling of 520319797 in words is "five hundred twenty million, three hundred nineteen thousand, seven hundred ninety-seven".