520393 has 2 divisors, whose sum is σ = 520394. Its totient is φ = 520392.

The previous prime is 520381. The next prime is 520409. The reversal of 520393 is 393025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419904 + 100489 = 648^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 520393 - 2⁵ = 520361 is a prime.

It is not a weakly prime, because it can be changed into another prime (520313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260196 + 260197.

It is an arithmetic number, because the mean of its divisors is an integer number (260197).

2⁵²⁰³⁹³ is an apocalyptic number.

It is an amenable number.

520393 is a deficient number, since it is larger than the sum of its proper divisors (1).

520393 is an equidigital number, since it uses as much as digits as its factorization.

520393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 520393 is about 721.3827000975. The cubic root of 520393 is about 80.4347683425.

The spelling of 520393 in words is "five hundred twenty thousand, three hundred ninety-three".