555

What would you like help with for "555"? Here are quick possibilities:

• As a number (math): 555 = 3 × 5 × 37; divisors are 1, 3, 5, 15, 37, 111, 185, 555; sum of digits = 15; divisible by 3 and 5; in Roman numerals: DLV.
• 555 timer IC (electronics): common timer IC used in astable/monostable modes; typical formulas and pinout.

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