555

Do you want math properties of 555, or something else (e.g., 555 timer, date/time, culture)? Here are quick math facts if that helps for exam prep:

• Decimal: 555
• Prime factorization: 3 × 5 × 37
• Divisibility: divisible by 3 (sum of digits = 15) and by 5 (ends with 5); also divisible by 15
• Other representations:
  • Roman numerals: DLV
  • Binary: 1000101011
  • Hexadecimal: 0x22B
  • Base 3: 202120_3
  • Base 9: 676_9
• In words: five hundred fifty-five
• Example problems you could try:
  • Show 555 = 3 × 5 × 37 and find gcd(555, 1000) = 5
  • Convert 555 to different bases (done above)
  • If you like, I can generate a few practice questions tailored to your course

Which direction would you like to go?