555

What would you like to do with 555? Here are quick math facts you can use in exams, in case that’s helpful:

• Prime factorization: 555 = 3 × 5 × 37
• Divisors: 1, 3, 5, 15, 37, 111, 185, 555 (eight divisors)
• Sum of divisors: 912 (so 555 is abundant)
• Roman numeral: DLV
• Binary: 1000101011
• Base-3: 202120_3

If you want, I can turn this into a quick practice problem (e.g., list factors, check if it’s perfect/abundant/deficient, convert to another base). What topic should we focus on?