Looks more like a Rebutia to me but I don't know for sure. Rebutias often flower easy.

For what it's worth, it isn't a Mammillaria. In Mamms, the areoles (the parts with the spines) aren't lined up from top to bottom like yours.

I’m thinking more of a Parodia. Maybe a variety or subspecies of scopa. Cactus can be hard to get a true id without the flowers.

I agree with Kara. I was going to guess the old name Notocactus. This will probably have yellow flowers.

I also agree with Kara, I'm thinking Parodia as well. Was going to guess Parodia scopa.

Parodia scopa seems to have several of these silver spined subspecies, some of them only distinguishable by flower ;-). I would just say P. scopa.

Huge thank you everyone!