520726163 has 2 divisors, whose sum is σ = 520726164. Its totient is φ = 520726162.

The previous prime is 520726111. The next prime is 520726183. The reversal of 520726163 is 361627025.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520726163 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (520726183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260363081 + 260363082.

It is an arithmetic number, because the mean of its divisors is an integer number (260363082).

Almost surely, 2^520726163 is an apocalyptic number.

520726163 is a deficient number, since it is larger than the sum of its proper divisors (1).

520726163 is an equidigital number, since it uses as much as digits as its factorization.

520726163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 520726163 is about 22819.4251242226. The cubic root of 520726163 is about 804.5192984156.

The spelling of 520726163 in words is "five hundred twenty million, seven hundred twenty-six thousand, one hundred sixty-three".