520747 has 2 divisors, whose sum is σ = 520748. Its totient is φ = 520746.

The previous prime is 520721. The next prime is 520759. The reversal of 520747 is 747025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520747 - 2¹¹ = 518699 is a prime.

520747 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (520717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260373 + 260374.

It is an arithmetic number, because the mean of its divisors is an integer number (260374).

2⁵²⁰⁷⁴⁷ is an apocalyptic number.

520747 is a deficient number, since it is larger than the sum of its proper divisors (1).

520747 is an equidigital number, since it uses as much as digits as its factorization.

520747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 520747 is about 721.6280205203. The cubic root of 520747 is about 80.4530029292.

The spelling of 520747 in words is "five hundred twenty thousand, seven hundred forty-seven".