555

Not sure what you want about 555. Do you mean math properties, or something like the 555 timer IC, or another context? Here are quick facts you might find useful:

Math properties

• Prime factorization: 555 = 3 × 5 × 37
• Divisors: 1, 3, 5, 15, 37, 111, 185, 555
• Binary: 555 = 1000101011₂
• Hexadecimal: 0x22B
• Octal: 0o1053
• Roman numeral: DLV
• It's a repdigit (555) and a palindrome (reads the same forward/backward)

If you meant the 555 timer IC (used in circuits), I can explain its operation in astable/monostable modes and timing formulas. Tell me which direction you want.