520207789 has 2 divisors, whose sum is σ = 520207790. Its totient is φ = 520207788.

The previous prime is 520207733. The next prime is 520207801. The reversal of 520207789 is 987702025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326524900 + 193682889 = 18070^2 + 13917^2 .

It is a cyclic number.

It is not a de Polignac number, because 520207789 - 2⁹ = 520207277 is a prime.

It is a super-2 number, since 2×520207789² = 541232287472537042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520307789) 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, 260103894 + 260103895.

It is an arithmetic number, because the mean of its divisors is an integer number (260103895).

Almost surely, 2^520207789 is an apocalyptic number.

It is an amenable number.

520207789 is a deficient number, since it is larger than the sum of its proper divisors (1).

520207789 is an equidigital number, since it uses as much as digits as its factorization.

520207789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 520207789 is about 22808.0641221477. The cubic root of 520207789 is about 804.2522480418.

The spelling of 520207789 in words is "five hundred twenty million, two hundred seven thousand, seven hundred eighty-nine".