520779793 has 2 divisors, whose sum is σ = 520779794. Its totient is φ = 520779792.

The previous prime is 520779733. The next prime is 520779799. The reversal of 520779793 is 397977025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 409941009 + 110838784 = 20247^2 + 10528^2 .

It is a cyclic number.

It is not a de Polignac number, because 520779793 - 2¹⁷ = 520648721 is a prime.

It is not a weakly prime, because it can be changed into another prime (520779799) 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, 260389896 + 260389897.

It is an arithmetic number, because the mean of its divisors is an integer number (260389897).

Almost surely, 2^520779793 is an apocalyptic number.

It is an amenable number.

520779793 is a deficient number, since it is larger than the sum of its proper divisors (1).

520779793 is an equidigital number, since it uses as much as digits as its factorization.

520779793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 833490, while the sum is 49.

The square root of 520779793 is about 22820.6001893026. The cubic root of 520779793 is about 804.5469168274.

The spelling of 520779793 in words is "five hundred twenty million, seven hundred seventy-nine thousand, seven hundred ninety-three".