I wouldn't rule out mythological significance or anything of the kind but personally I would find fifty tribes, for instance, a lot more unusual since it is a significantly even number. Tribes are completely independent so it would strike me as a bizarre coincidence that, out of all the ones created, it somehow perfectly resulted in 50 unique tribes, haha.
That extra one counts!
That extra one counts!
Characters: Andre Winter (Hy'ur) / K'nahli Yohko (Miqo'te)