| Attribute | Value | En. example | En. tag |
| Number | singular | one | NUCs |
| plural | fifty | NUCp | |
Note that when a numeral word occurs with a plural inflection (`firsts', `fifties'), this is considered a clear indicator of the word's status as a noun, rather than as a numeral in the normal sense. All numerals can be converted into nouns for special functions.