It's the channel number of the Sundance Channel on DirectTV. It gained Internet notoriety from a TV commercial starring Weird Al Yankovic.
557! It's your new favorite number! 557! Tattoo it on your forehead!
Jesuscoin a term for a "hot" cryptocurrency that's rapidly gaining in popularity. You can often tell with a join has hit Jesuscoin status when hypebeast celebrities start talking about it on Twitter.
Man, Dogecoin is the new Jesuscoin this week. Mark Cuban pumped it, and went up 500%!