555

Here are a few quick facts about 555 that can be handy for quick checks or quick questions on exams:

• Factorization: 555 = 3 × 5 × 37
• Divisibility: divisible by 3 (digits sum to 15) and by 5 (ends with 5)
• Divisors: 1, 3, 5, 15, 37, 111, 185, 555
• Roman numeral: DL V → DLV (555)
• Base conversions:
  • Binary: 1000101011₂
  • Hexadecimal: 0x22B
  • Base-3: 202120₃
• Modulo checks: 555 ≡ 6 (mod 9); 555 ≡ 5 (mod 11)

Would you like me to tailor these to a specific subject (e.g., number theory, base conversions, modular arithmetic) or generate some practice problems using 555?