520943 has 2 divisors, whose sum is σ = 520944. Its totient is φ = 520942.

The previous prime is 520921. The next prime is 520957. The reversal of 520943 is 349025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520943 - 2¹⁰ = 519919 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260471 + 260472.

It is an arithmetic number, because the mean of its divisors is an integer number (260472).

2⁵²⁰⁹⁴³ is an apocalyptic number.

520943 is a deficient number, since it is larger than the sum of its proper divisors (1).

520943 is an equidigital number, since it uses as much as digits as its factorization.

520943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 520943 is about 721.7638117833. The cubic root of 520943 is about 80.4630953610.

Adding to 520943 its reverse (349025), we get a palindrome (869968).

The spelling of 520943 in words is "five hundred twenty thousand, nine hundred forty-three".