5045

5045 is a natural number that comes after 5044 and before 5046. It appears in mathematical contexts as well as in various numeric identifiers used in catalogs, inventories, and records.

In mathematics, 5045 is an odd composite number with prime factorization 5 × 1009. This makes it a semiprime, the product of two primes. The sum of its digits is 14, so it is not divisible by 3. It is congruent to 1 modulo 4, which is consistent with its being able to be expressed as a sum of two squares; for example, 5045 = 71^2 + 2^2.

As a year, 5045 CE would be a distant future date. In fiction and speculative contexts, such far-future dates are sometimes used to set narratives or hypothetical scenarios.

In astronomy and other sciences, numbers in the 5000s are often used as sequential designations for newly identified objects or classifications. If 5045 is used as a designation, it would typically be followed by a formal name once public or scientific recognition occurs.