503363 has 4 divisors (see below), whose sum is σ = 575280. Its totient is φ = 431448.

The previous prime is 503359. The next prime is 503369. The reversal of 503363 is 363305.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 363305 = 5 ⋅72661.

It is a cyclic number.

It is not a de Polignac number, because 503363 - 2² = 503359 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503369) 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 in 3 ways as a sum of consecutive naturals, for example, 35948 + ... + 35961.

It is an arithmetic number, because the mean of its divisors is an integer number (143820).

2⁵⁰³³⁶³ is an apocalyptic number.

503363 is a deficient number, since it is larger than the sum of its proper divisors (71917).

503363 is an equidigital number, since it uses as much as digits as its factorization.

503363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71916.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 503363 is about 709.4807960756. The cubic root of 503363 is about 79.5476027818.

Adding to 503363 its reverse (363305), we get a palindrome (866668).

The spelling of 503363 in words is "five hundred three thousand, three hundred sixty-three".