520222393 has 2 divisors, whose sum is σ = 520222394. Its totient is φ = 520222392.

The previous prime is 520222361. The next prime is 520222397. The reversal of 520222393 is 393222025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 490932649 + 29289744 = 22157^2 + 5412^2 .

It is a cyclic number.

It is not a de Polignac number, because 520222393 - 2⁵ = 520222361 is a prime.

It is not a weakly prime, because it can be changed into another prime (520222397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260111196 + 260111197.

It is an arithmetic number, because the mean of its divisors is an integer number (260111197).

Almost surely, 2^520222393 is an apocalyptic number.

It is an amenable number.

520222393 is a deficient number, since it is larger than the sum of its proper divisors (1).

520222393 is an equidigital number, since it uses as much as digits as its factorization.

520222393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 520222393 is about 22808.3842698250. The cubic root of 520222393 is about 804.2597740024.

The spelling of 520222393 in words is "five hundred twenty million, two hundred twenty-two thousand, three hundred ninety-three".