20533

20533 is a natural number that follows 20532 and precedes 20534. In mathematics, it is an odd prime number. It is congruent to 1 modulo 4, which by Fermat's theorem on sums of two squares implies that 20533 can be expressed as a sum of two integer squares. One such representation is 20533 = 137^2 + 42^2.

As a prime, its only positive divisors are 1 and 20533; therefore it has no nontrivial factorization. Its decimal representation is 20533, and the sum of its digits is 13. It is not a multiple of 2, 3, or 5, and it has no divisors less than or equal to its square root.

In broader contexts, 20533 may appear as an identifier in numerically labeled systems, such as catalog numbers or postal code fragments, but there is no widely recognized meaning attached to the number beyond these mathematical properties.