521 in Roman numerals

The number 521 is written in Roman numerals like this: DXXI

DXXI = 521

How to write 521 in Roman numerals

Split the number by place value and write each part in Roman numerals:

• 500 = D
• 20 = XX
• 1 = I

Put the parts together: D + XX + I = DXXI.

Going the other way? See the Roman numeral DXXI.

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520 in Roman numerals: DXX

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522 in Roman numerals: DXXII

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