520222361 has 2 divisors, whose sum is σ = 520222362. Its totient is φ = 520222360.

The previous prime is 520222333. The next prime is 520222393. The reversal of 520222361 is 163222025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504855961 + 15366400 = 22469^2 + 3920^2 .

It is a cyclic number.

It is not a de Polignac number, because 520222361 - 2²⁶ = 453113497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520222301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260111180 + 260111181.

It is an arithmetic number, because the mean of its divisors is an integer number (260111181).

Almost surely, 2^520222361 is an apocalyptic number.

It is an amenable number.

520222361 is a deficient number, since it is larger than the sum of its proper divisors (1).

520222361 is an equidigital number, since it uses as much as digits as its factorization.

520222361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 520222361 is about 22808.3835683286. The cubic root of 520222361 is about 804.2597575118.

Adding to 520222361 its reverse (163222025), we get a palindrome (683444386).

The spelling of 520222361 in words is "five hundred twenty million, two hundred twenty-two thousand, three hundred sixty-one".