520443 has 24 divisors (see below), whose sum is σ = 938496. Its totient is φ = 270000.

The previous prime is 520433. The next prime is 520447. The reversal of 520443 is 344025.

It is a happy number.

It is not a de Polignac number, because 520443 - 2⁴ = 520427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (39104).

2⁵²⁰⁴⁴³ is an apocalyptic number.

520443 is a deficient number, since it is larger than the sum of its proper divisors (418053).

520443 is a wasteful number, since it uses less digits than its factorization.

520443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 520443 is about 721.4173549340. The cubic root of 520443 is about 80.4373443505.

Adding to 520443 its reverse (344025), we get a palindrome (864468).

The spelling of 520443 in words is "five hundred twenty thousand, four hundred forty-three".