520542163 has 2 divisors, whose sum is σ = 520542164. Its totient is φ = 520542162.

The previous prime is 520542161. The next prime is 520542167. The reversal of 520542163 is 361245025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520542163 - 2¹ = 520542161 is a prime.

Together with 520542161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (520542161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260271081 + 260271082.

It is an arithmetic number, because the mean of its divisors is an integer number (260271082).

Almost surely, 2^520542163 is an apocalyptic number.

520542163 is a deficient number, since it is larger than the sum of its proper divisors (1).

520542163 is an equidigital number, since it uses as much as digits as its factorization.

520542163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 520542163 is about 22815.3931151756. The cubic root of 520542163 is about 804.4245275612.

Adding to 520542163 its reverse (361245025), we get a palindrome (881787188).

The spelling of 520542163 in words is "five hundred twenty million, five hundred forty-two thousand, one hundred sixty-three".