520538339 has 2 divisors, whose sum is σ = 520538340. Its totient is φ = 520538338.

The previous prime is 520538303. The next prime is 520538341. The reversal of 520538339 is 933835025.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520538339 - 2²⁴ = 503761123 is a prime.

It is a Sophie Germain prime.

Together with 520538341, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_27379361 and since 520538339 and 27379361 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (520538539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260269169 + 260269170.

It is an arithmetic number, because the mean of its divisors is an integer number (260269170).

Almost surely, 2^520538339 is an apocalyptic number.

520538339 is a deficient number, since it is larger than the sum of its proper divisors (1).

520538339 is an equidigital number, since it uses as much as digits as its factorization.

520538339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 520538339 is about 22815.3093119510. The cubic root of 520538339 is about 804.4225577388.

The spelling of 520538339 in words is "five hundred twenty million, five hundred thirty-eight thousand, three hundred thirty-nine".