520889 has 2 divisors, whose sum is σ = 520890. Its totient is φ = 520888.

The previous prime is 520867. The next prime is 520913. The reversal of 520889 is 988025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478864 + 42025 = 692^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 520889 - 2⁸ = 520633 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520889.

It is not a weakly prime, because it can be changed into another prime (520589) 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, 260444 + 260445.

It is an arithmetic number, because the mean of its divisors is an integer number (260445).

2⁵²⁰⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

520889 is a deficient number, since it is larger than the sum of its proper divisors (1).

520889 is an equidigital number, since it uses as much as digits as its factorization.

520889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 520889 is about 721.7264024546. The cubic root of 520889 is about 80.4603150457.

The spelling of 520889 in words is "five hundred twenty thousand, eight hundred eighty-nine".