555

Do you want quick math facts about the number 555, or something else (like base conversions, roman numerals, etc.)? Here are handy facts you can use for exams:

• Decimal: 555
• Prime factorization: 3 × 5 × 37
• Divisible by: 3, 5, and 15 (sum of digits is 15; ends with 5)
• Sum of digits: 5 + 5 + 5 = 15
• Roman numerals: DLV
• Binary: 1000101011 (since 512 + 32 + 8 + 2 + 1 = 555)
• Hexadecimal: 0x22B
• Base 7: 1422_7 (1×343 + 4×49 + 2×7 + 2 = 555)
• Base 3: 202120_3 (2×243 + 0×81 + 2×27 + 1×9 + 2×3 + 0×1 = 555)
• Factors: 1, 3, 5, 15, 37, 111, 185, 555
• If you want a quick practice problem: gcd(555, 1000) = 5; or convert 555 to another base you choose.

Would you like me to turn this into a couple of exam-style questions, or focus on a specific representation (e.g., base conversions or divisibility)?