How to write 55 in Roman numerals
Roman numerals are built place by place, from the largest value to the smallest. For 55 the places are 50 (tens), 5 (ones).
- Write 50 as
L. - Write 5 as
V.
Joined together, L + V gives LV.
55 digit by digit
| Place | Value | Numeral | Rule used |
|---|---|---|---|
| tens | 50 | L | the five symbol on its own |
| ones | 5 | V | the five symbol on its own |
Check LV by reading it back
Reading LV from left to right and adding the pieces: L = 50, V = 5. Together that is 50 + 5 = 55, so LV and 55 match.
Mistakes to avoid with LV
- Only I, X and C may be placed before a larger symbol to subtract, so LV never contains forms such as VX or LC.
- Read LV as one number, not letter by letter: add the values left to right, except where a smaller symbol sits before a larger one.
Facts about the number 55
- 55 is an odd number and composite, with prime factors 5 x 11.
- In binary 55 is
110111and in hexadecimal it is37. - Written out, 55 is "fifty-five".
- The digits of 55 add up to 10.
Where you will see 55 in Roman numerals
Anniversary celebrations often feature 55 written as LV on printed programs and commemorative banners. Event planners select Roman numerals for these materials to evoke tradition and to give the printed designs a more formal appearance.
Numbers near 55
FAQ
What is 55 in Roman numerals?
55 is written LV in Roman numerals. It is built from L (50), V (5).
How do you write 55 in lowercase Roman numerals?
Lowercase Roman numerals use the same rules, so 55 is lv. Lowercase is common for page numbers in a book's preface and for outline levels.
How do I convert any number to Roman numerals?
Split the number into thousands, hundreds, tens and ones, write each part with the symbols I, V, X, L, C, D and M, then join them from largest to smallest. Or paste it into the Roman numeral converter, which also converts back.
More roman numerals
- 54 (LIV): previous page
- 56 (LVI): next page
- Roman numerals chart: the full list