Mine is 5 because it comes up a lot with me. I was born in May, the 5th month of the year, on the 5th day and My name is Emily which is 5 letters and also starts with the 5th letter of the alphabet. My favorite color and eyes are blue which is the 5th color of the rainbow. That last one is a stretch but only because I wanted there to be 5 reasons why my favorite number is 5 lmaoooo