563303 has 4 divisors (see below), whose sum is σ = 606648. Its totient is φ = 519960.

The previous prime is 563287. The next prime is 563327. The reversal of 563303 is 303365.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 563303 - 2⁴ = 563287 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21653 + ... + 21678.

It is an arithmetic number, because the mean of its divisors is an integer number (151662).

2⁵⁶³³⁰³ is an apocalyptic number.

563303 is a deficient number, since it is larger than the sum of its proper divisors (43345).

563303 is a wasteful number, since it uses less digits than its factorization.

563303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43344.

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

The square root of 563303 is about 750.5351424151. The cubic root of 563303 is about 82.5874432503.

Adding to 563303 its reverse (303365), we get a palindrome (866668).

The spelling of 563303 in words is "five hundred sixty-three thousand, three hundred three".