555

Do you want to work with the number 555? Here are a few quick facts:

• Prime factorization: 3 × 5 × 37
• Divisible by 3 and by 5 (sum of digits is 15)
• 555 ÷ 15 = 37
• Binary representation: 1000101011

What would you like to do? Options: factor it, simple mental-math drills using 555, or generate a few practice questions involving 555.