555

Do you want something specific about the number 555, or is it part of a problem you’re working on? Here are quick facts in case that helps:

• Divisibility: divisible by 3 (sum of digits = 15), divisible by 5; not divisible by 9, 11, etc.
• Prime factorization: 555 = 3 × 5 × 37.
• Roman numerals: 555 = DLV.
• Binary/hex/octal: Binary 1000101011, Hex 0x22B, Octal 1053.

If you have an exact exam problem or want a worked example using 555, share it and I’ll step through it.