520263791 has 2 divisors, whose sum is σ = 520263792. Its totient is φ = 520263790.

The previous prime is 520263787. The next prime is 520263803. The reversal of 520263791 is 197362025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520263791 - 2² = 520263787 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520263701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260131895 + 260131896.

It is an arithmetic number, because the mean of its divisors is an integer number (260131896).

Almost surely, 2^520263791 is an apocalyptic number.

520263791 is a deficient number, since it is larger than the sum of its proper divisors (1).

520263791 is an equidigital number, since it uses as much as digits as its factorization.

520263791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 520263791 is about 22809.2917689261. The cubic root of 520263791 is about 804.2811070986.

The spelling of 520263791 in words is "five hundred twenty million, two hundred sixty-three thousand, seven hundred ninety-one".