520652137 has 2 divisors, whose sum is σ = 520652138. Its totient is φ = 520652136.

The previous prime is 520652131. The next prime is 520652203. The reversal of 520652137 is 731256025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319551376 + 201100761 = 17876^2 + 14181^2 .

It is a cyclic number.

It is not a de Polignac number, because 520652137 - 2³ = 520652129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520652099 and 520652108.

It is not a weakly prime, because it can be changed into another prime (520652131) 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, 260326068 + 260326069.

It is an arithmetic number, because the mean of its divisors is an integer number (260326069).

Almost surely, 2^520652137 is an apocalyptic number.

It is an amenable number.

520652137 is a deficient number, since it is larger than the sum of its proper divisors (1).

520652137 is an equidigital number, since it uses as much as digits as its factorization.

520652137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 520652137 is about 22817.8030712862. The cubic root of 520652137 is about 804.4811733433.

The spelling of 520652137 in words is "five hundred twenty million, six hundred fifty-two thousand, one hundred thirty-seven".