Hello , سلام،Salam
Farsi (also mentioned as Persian)is the official language of Iran.Farsi is an Indo-Iranian language .While it is written in Arabic script,from right to left, the language itself is not related to Arabic at all.
I don’t really see any safety problems for solo travelers. As I said, things like theft are rare, and the locals are ridiculously hospitable. In the major cities, tourists are everywhere, so it’s not like you would stick out in any way as being alone.”Shara Johnson , www.jessieonajourney.com”