15 in words
British English
fifteen
Fifteen follows five into an f, the same way fifth does.
Quick reference
- In figures
- 15
- British English
- fifteen
- American English
- The same (why they differ)
- Ordinal
- fifteenth (15th)
- Roman numeral
- XV
- Place value
- 1 in the tens column; 5 in the ones column
- Expanded form
- 10 + 5
- Standard form
- 1.5 × 10¹
- Even or odd
- Odd
- Prime factors
- 3 × 5
Convert any other number, up to thirty-six digits.