520803 has 8 divisors (see below), whose sum is σ = 771600. Its totient is φ = 347184.

The previous prime is 520787. The next prime is 520813. The reversal of 520803 is 308025.

Added to its reverse (308025) it gives a triangular number (828828 = T₁₂₈₇).

It is not a de Polignac number, because 520803 - 2⁴ = 520787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9618 + ... + 9671.

It is an arithmetic number, because the mean of its divisors is an integer number (96450).

2⁵²⁰⁸⁰³ is an apocalyptic number.

520803 is a deficient number, since it is larger than the sum of its proper divisors (250797).

520803 is a wasteful number, since it uses less digits than its factorization.

520803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19298 (or 19292 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 520803 is about 721.6668206312. Note that the first 3 decimals coincide. The cubic root of 520803 is about 80.4558867395.

Adding to 520803 its reverse (308025), we get a palindrome (828828).

The spelling of 520803 in words is "five hundred twenty thousand, eight hundred three".