555

Here are quick, exam-ready facts about 555. Tell me which type you want to practice and I’ll tailor more problems.

• Factorization: 555 = 3 × 5 × 37
• Divisors: 1, 3, 5, 15, 37, 111, 185, 555
• Sum of digits: 5+5+5 = 15 (divisible by 3; digital root 6)
• Ends with 5: divisible by 5
• Roman numeral: DLV
• Binary: 555 = 1000101011₂
• Hexadecimal: 0x22B
• Base-3: 555 = 202120₃
• Base-7: 555 = 1422₇
• Base-9: 555 = 676₉

Sample quick problems (with answers):

• What is the prime factorization? 3 × 5 × 37
• Is 555 divisible by 9? No (digit sum 15, not a multiple of 9)
• Express 555 in base 2. Answer: 1000101011₂
• Convert 555 to base 7. Answer: 1422₇

If you tell me the exact exam topic (e.g., factorization, modular arithmetic, base conversions, etc.), I can provide a focused set of problems and step-by-step solutions.