555

What would you like to do with 555? Here are quick facts in case you need quick recall for exams:

• Prime factorization: 555 = 3 × 5 × 37
• Sum of digits: 5 + 5 + 5 = 15 (so 555 is divisible by 15)
• It is a Harshad (Niven) number in base 10
• Roman numeral: DLV
• Binary: 1000101011₂
• Hexadecimal: 0x22B

Options if you want to practice:

• Factorization and divisor count
• Converting between bases (binary/hex/decimal)
• Problems using 555 (e.g., divisibility tests, expressing as product of primes, etc.)

Tell me what you’re studying (math, CS, etc.) and the level, and I’ll tailor some practice questions.