Mary Magdalene was not a prostitute. Not once in the bible has anyone ever stated that she was.

Pope Alexander II falsely named her as a prostitute.
Additional biblical information that has gained authenticity.
We do know that Magdalene was with Jesus during his most powerful moments: The crucifiction, the first encounter after the crucifiction, along side with the diciples.
Gnostic gospel of Mary Magdalene.
Hopefully I'll get back to this.