555

What would you like to do with 555? Here are a few quick options you might find useful for exams. Tell me which you want, or ask for something else.

• Decimal factorization: 555 = 3 × 5 × 37
• Divisors: 1, 3, 5, 15, 37, 111, 185, 555
• Sum of divisors: 912; sum of proper divisors: 912 − 555 = 357; 555 is deficient (not perfect or abundant)
• Roman numeral: 555 = DLV
• Binary: 555 = 1000101011₂
• Hexadecimal: 0x22B
• Octal: 1053₈

If you want, I can turn this into a quick practice question set (e.g., factorization, base conversions, modular arithmetic). Or, if you meant something else (like the 555 timer IC in electronics), tell me and I’ll tailor to that.