Amalie is the German/Scandinavian form of Amelia — from the Germanic amal (work, vigor, fertility). Princess Amalie of Saxe-Weimar-Eisenach (1830-1872) — German princess. Saint Amalia — early Christian martyr. Amalie Lyse — Danish actress. Amalie Sørensen — Norwegian Olympic figure skater. Amalie Holm — Danish actress.
Amalie 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 Amalie reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.