What kind of pill is very small, white and round with a 57 imprint on one side?

I found a pill when I was doing laundry and I'm trying to figure out what it is, anyone who can help I would greatly appreciate it. It is a very small round white pill. One side has a 57 on it and there's a symbol of some sort on the other side but I can't make it out. I think it may be an ativan but I can't find an image online to verify.