555

Do you want something specific with the number 555? Here are a few quick math notes you can use for study:

• Factorization: 555 = 3 × 5 × 37
• Divisors: 1, 3, 5, 15, 37, 111, 185, 555 (eight divisors)
• Sum of digits: 5 + 5 + 5 = 15, so 555 is divisible by 3 and by 5; 555 ÷ 15 = 37
• In Roman numerals: 555 = DLV
• In binary: 555 = 1000101011₂
• In hexadecimal: 0x22B
• Is a Harshad (Niven) number in base 10 (divisible by the sum of its digits)

If you’d like, I can turn this into a couple of exam-style questions or do a quick base-conversion problem. What would you prefer?