Magdalene is from the Hebrew place-name Magdala — "tower" — a Galilean fishing village on the western shore of the Sea of Galilee. Mary Magdalene — the most prominent female disciple of Jesus in the New Testament — was the first witness to the Resurrection (John 20:11-18); the early Church Fathers called her apostola apostolorum ("apostle to the apostles"). The seven "demons" Jesus cast from her (Luke 8:2) are now widely understood by scholars as illness, not moral failing; the prostitute identification was a 6th-century conflation by Pope Gregory I.
Magdalene does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Magdalene reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.