555

Not sure what you want with “555.” Here are a few quick math notes you can use for exams, plus I can tailor problems to your topic.

Quick facts about 555:

• Factorization: 555 = 3 × 5 × 37
• Harshad (Niven) number: sum of digits = 5+5+5 = 15, and 555 / 15 = 37
• Roman numeral: 555 = DLV
• Modulo example: 555 mod 7 = 2

If you want practice problems, tell me your course and level (e.g., algebra, number theory, calculus, physics), and I’ll generate a set of questions centered on that topic using 555 as a theme. Or I can just solve a specific type of problem you’re studying.