Salome (שָׁלוֹם, σαλώμη) comes from the Hebrew/Aramaic shalom, meaning "peace" — the most common Hebrew greeting. The biblical Salome is the daughter of Herodias whose dance led to John the Baptist's beheading; another Salome was a follower of Jesus.
Salome was popular in early Christianity and rose again in the early 20th century with Oscar Wilde's play Salomé (1893) and Richard Strauss's opera.
Salome 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 Salome reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.