22503 has 8 divisors (see below), whose sum is σ = 32368. Its totient is φ = 13824.

The previous prime is 22501. The next prime is 22511. The reversal of 22503 is 30522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22503 - 2¹ = 22501 is a prime.

It is a Duffinian number.

22503 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22501) 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 7 ways as a sum of consecutive naturals, for example, 250 + ... + 327.

It is an arithmetic number, because the mean of its divisors is an integer number (4046).

2²²⁵⁰³ is an apocalyptic number.

22503 is a deficient number, since it is larger than the sum of its proper divisors (9865).

22503 is a wasteful number, since it uses less digits than its factorization.

22503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 22503 is about 150.0099996667. The cubic root of 22503 is about 28.2323355254.

It can be divided in two parts, 22 and 503, that added together give a palindrome (525).

The spelling of 22503 in words is "twenty-two thousand, five hundred three".