520234361 has 2 divisors, whose sum is σ = 520234362. Its totient is φ = 520234360.

The previous prime is 520234349. The next prime is 520234367. The reversal of 520234361 is 163432025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 393784336 + 126450025 = 19844^2 + 11245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520234361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520234361.

It is not a weakly prime, because it can be changed into another prime (520234367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260117180 + 260117181.

It is an arithmetic number, because the mean of its divisors is an integer number (260117181).

Almost surely, 2^520234361 is an apocalyptic number.

It is an amenable number.

520234361 is a deficient number, since it is larger than the sum of its proper divisors (1).

520234361 is an equidigital number, since it uses as much as digits as its factorization.

520234361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 520234361 is about 22808.6466279786. The cubic root of 520234361 is about 804.2659414334.

Adding to 520234361 its reverse (163432025), we get a palindrome (683666386).

The spelling of 520234361 in words is "five hundred twenty million, two hundred thirty-four thousand, three hundred sixty-one".