520716347 has 2 divisors, whose sum is σ = 520716348. Its totient is φ = 520716346.

The previous prime is 520716293. The next prime is 520716349. The reversal of 520716347 is 743617025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520716347 - 2¹² = 520712251 is a prime.

It is a super-2 number, since 2×520716347² = 542291028066048818, which contains 22 as substring.

Together with 520716349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520716349) 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, 260358173 + 260358174.

It is an arithmetic number, because the mean of its divisors is an integer number (260358174).

Almost surely, 2^520716347 is an apocalyptic number.

520716347 is a deficient number, since it is larger than the sum of its proper divisors (1).

520716347 is an equidigital number, since it uses as much as digits as its factorization.

520716347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 520716347 is about 22819.2100432947. The cubic root of 520716347 is about 804.5142431603.

The spelling of 520716347 in words is "five hundred twenty million, seven hundred sixteen thousand, three hundred forty-seven".