520787 has 2 divisors, whose sum is σ = 520788. Its totient is φ = 520786.

The previous prime is 520763. The next prime is 520813. The reversal of 520787 is 787025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520787 - 2¹⁴ = 504403 is a prime.

It is a Chen prime.

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, 260393 + 260394.

It is an arithmetic number, because the mean of its divisors is an integer number (260394).

2⁵²⁰⁷⁸⁷ is an apocalyptic number.

520787 is a deficient number, since it is larger than the sum of its proper divisors (1).

520787 is an equidigital number, since it uses as much as digits as its factorization.

520787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 520787 is about 721.6557350981. The cubic root of 520787 is about 80.4550628148.

The spelling of 520787 in words is "five hundred twenty thousand, seven hundred eighty-seven".