I believe "Earth-Prime" and "New Earth" are both counted amongst the 52. So technically it would be 50 universes + New Earth + Earth-Prime.
I'm going to try to put this as gently as I can, but basically you are wrong and I am right. New Earth is essentially Earth-0, yes, but there is no "Earth-52." The list goes Earth-0 through Earth-51 (which is currently the New Gods universe). Yes, it's a stupid way to name the universes, but trust me...I read all of Countdown and the ridiculous naming convention stood out even there. And yes, "Earth-Prime" is back, but there is no reason to think it isn't amongst the 52 either, especially now that we've found out that the Threeboot Legion is from there.
Google or wiki it if you don't believe me.
http://en.wikipedia.org/wiki/List_of_DC_Multiverse_worlds#The_52
http://dc.wikia.com/wiki/Multiverse#List_of_52_Universes
The Multiverse is very important
What the hell is New Earth?
They already overwrote the Earth-16 established in Countdown: Arena with the upcoming Young Justice cartoon. I'm looking forward to the other continuity f***-ups that will inevitably come from various people trying to use various Earths for various things, 'cause you just know that there's no reference for which Earth is what on any editor's computer at DC. They're probably referring to Wikipedia like everyone else.Well, there may be 52 Earths in this mutliverse that DC wants to call 'Ourz Multiverse, duds', but ultimately it is infinite, because you we all know that just because DC has these 52 alternate Earths, there's always going to be Elseworlds or alternate futures that don't fit those 52.
No one because DC has definitively said it's not. It's 52 Earths, period.
that's the magic based one yes