520763137 has 2 divisors, whose sum is σ = 520763138. Its totient is φ = 520763136.

The previous prime is 520763101. The next prime is 520763189. The reversal of 520763137 is 731367025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520250481 + 512656 = 22809^2 + 716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520763137 is a prime.

It is not a weakly prime, because it can be changed into another prime (520763437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260381568 + 260381569.

It is an arithmetic number, because the mean of its divisors is an integer number (260381569).

Almost surely, 2^520763137 is an apocalyptic number.

It is an amenable number.

520763137 is a deficient number, since it is larger than the sum of its proper divisors (1).

520763137 is an equidigital number, since it uses as much as digits as its factorization.

520763137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 520763137 is about 22820.2352529504. The cubic root of 520763137 is about 804.5383395129.

The spelling of 520763137 in words is "five hundred twenty million, seven hundred sixty-three thousand, one hundred thirty-seven".