550 in Roman numerals
DL
The number 550 is written DL in Roman numerals.
How DL breaks down
| Symbols | Value |
|---|---|
D | 500 |
L | 50 |
DL | 550 |
Every symbol here is written in descending order and simply added together — no subtractive pairs are involved.
Nearby numbers
| Number | Roman numeral |
|---|---|
| 545 | DXLV |
| 546 | DXLVI |
| 547 | DXLVII |
| 548 | DXLVIII |
| 549 | DXLIX |
| 550 | DL |
| 551 | DLI |
| 552 | DLII |
| 553 | DLIII |
| 554 | DLIV |
| 555 | DLV |
The seven symbols
I | 1 | C | 100 |
V | 5 | D | 500 |
X | 10 | M | 1,000 |
L | 50 |
550 in other notations
| Roman | DL |
| Binary | 1000100110 |
| Hexadecimal | 226 |
| Octal | 1046 |
| Written out | five hundred and fifty |
Writing it by hand
Work down through the symbol values, taking as many of each as will fit before moving to the next. For 550:
D = 500 remaining: 50
L = 50 remaining: 0The result reads DL — 2 characters, against 3 digits in Arabic numerals.
Frequently asked questions
What is 550 in Roman numerals?
DL
How do you read DL?
Work left to right, adding each symbol — except where a smaller symbol precedes a larger one, in which case it is subtracted. D is 500, L is 50, giving 550 in total.
How do you write 550 in words?
five hundred and fifty.
Why is there no zero?
Roman numerals have no symbol for zero. The concept reached Europe only with Hindu-Arabic numerals, centuries after the system was in use — which is a large part of why it was eventually replaced for arithmetic.