500000

500,000, also written as 500000, is the natural number that follows 499,999 and precedes 500,001. It is commonly spoken as five hundred thousand. In decimal notation it has five trailing zeros and can be expressed in scientific notation as 5 × 10^5. In Roman numerals it can be represented with a bar over D to indicate 500,000, a notation used for large values in classical lists.

Mathematically, 500,000 is an even composite number. Its prime factorization is 2^5 × 5^6, making it divisible by powers of 2 and 5 and, consequently, by 10^5. It is a round, or “milestone,” number in many counting contexts because it is a multiple of 10, 100, 1,000, and 100,000, among others. As a decimal figure ending in five zeros, it is often used in pricing, budgeting, and statistical reporting to denote half a million units or dollars.

In practical usage, 500,000 appears frequently as a milestone in population counts, fund-raising targets, and financial thresholds. For example, a city might reach a population of about 500,000, or a campaign might aim to raise 500,000 dollars. In computing and data contexts, it can denote a large but manageable data size or a specific quota, and it is sometimes used as a benchmark value in simulations and testing.

Overall, 500,000 is notable for its role as a large, round quantity that is easy to interpret and apply across mathematics, finance, and planning.