555

Here are a few quick things about the number 555. Let me know which you need or share a problem you’re working on.

• Decimal to other bases:
  • Binary: 1000101011
  • Hex: 0x22B
• Roman numeral: DLV
• Factorization: 555 = 3 × 5 × 37
• Divisors: 1, 3, 5, 15, 37, 111, 185, 555
• Harshad number in base 10 (since 5+5+5 = 15 and 555 ÷ 15 = 37)

If you meant something else (e.g., 555 timer IC basics, a math problem, etc.), tell me and I’ll tailor help for your exam prep.