520830787 has 2 divisors, whose sum is σ = 520830788. Its totient is φ = 520830786.

The previous prime is 520830769. The next prime is 520830799. The reversal of 520830787 is 787038025.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520830787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520830707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260415393 + 260415394.

It is an arithmetic number, because the mean of its divisors is an integer number (260415394).

Almost surely, 2^520830787 is an apocalyptic number.

520830787 is a deficient number, since it is larger than the sum of its proper divisors (1).

520830787 is an equidigital number, since it uses as much as digits as its factorization.

520830787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 520830787 is about 22821.7174419455. The cubic root of 520830787 is about 804.5731759917.

The spelling of 520830787 in words is "five hundred twenty million, eight hundred thirty thousand, seven hundred eighty-seven".