520307 has 2 divisors, whose sum is σ = 520308. Its totient is φ = 520306.

The previous prime is 520297. The next prime is 520309. The reversal of 520307 is 703025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520307 - 2⁴ = 520291 is a prime.

Together with 520309, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 2.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520307.

It is not a weakly prime, because it can be changed into another prime (520309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260153 + 260154.

It is an arithmetic number, because the mean of its divisors is an integer number (260154).

2⁵²⁰³⁰⁷ is an apocalyptic number.

520307 is a deficient number, since it is larger than the sum of its proper divisors (1).

520307 is an equidigital number, since it uses as much as digits as its factorization.

520307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 520307 is about 721.3230898841. The cubic root of 520307 is about 80.4303372227.

The spelling of 520307 in words is "five hundred twenty thousand, three hundred seven".