500(n = noun.quantity) d, five hundred - the cardinal number that is the product of one hundred and five;
is a kind of large integer
500(s = adj.all) d, five hundred - denoting a quantity consisting of 500 items or units;
one more than four hundred ninety-nine; five times one hundred; denoting a quantity consisting of five hundred items or units; -- representing the number five hundred as Arabic numerals [WordNet 1.5]