How many lvls on prestige?

There are actually 10. Not including the first 55 levels before the first symbol is achived.

There are 55 levels to each prestige and 10 prestige levels in all. The top one being a gold cross.

technically, you need to reach level 56 to prestige. Once you level up from 54 to 55, you can't prestige yet. You'll have about another 5000xp to go before the prestige becomes an option. True, there isn't technically a level 56, you just stop at 55, but that other 5,000xp means that there might as well be 56 levels prior to going prestige.

Given that there are 10 prestige levels, plus the original (before you actually achieve the first prestige symbol) there are 11 prestiges, each with 56 levels (except for 10th prestige level 55). (11 * 56) - 1 = 615

10th Prestige level 55

I dont want to be obviouse but ... follow the past couple and theye all leed to one awnser . 10 times u can complete prestige not including the first 55 levels. :D