Meryem is from the Turkish / Crimean Tatar Meryem — Turkish-Crimean Tatar rendition of Mary / Maryam (Hebrew Miriam). Meryem is one of the Turkish + Crimean Tatar + Levantine feminine names — central to traditional Turkish Muslim + Christian heritage.
Meryem 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 Meryem reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.