Number
520 in Roman numerals
520 is written DXX
Type any other number or numeral below to convert it.
Above 3,999? Type the barred part in brackets, e.g. (IV)CC = 4,200.
How DXX is built
Roman numerals are written one decimal place at a time, largest first.
- Dhundreds · 5D is 500.
- XXtens · 2X written 2 times: 2 × 10 = 20.
500 + 20 = 520
No subtraction is needed here: every letter is the same size or smaller than the one before it, so you simply add them up.
Mistakes to avoid
- There's no letter for zero. The zero is simply left out, which is why 520 has 2 parts, not 3.
About the number 520
- 520 is even and can be split into prime factors: 2 × 2 × 2 × 5 × 13, or in Roman numerals II × II × II × V × XIII.
- DXX has 3 letters. 907 of the numbers up to 1,000 have longer numerals.
Counting from 511 to 520
Every number from 511 to 520 starts DX (510); only the ending changes.
| Number | Roman numeral |
|---|---|
| 511 | DXI |
| 512 | DXII |
| 513 | DXIII |
| 514 | DXIV |
| 515 | DXV |
| 516 | DXVI |
| 517 | DXVII |
| 518 | DXVIII |
| 519 | DXIX |
| 520 | DXX |