I believe this is Mammillaria backebergiana, but a blondie version.
I have another one that look just like this, but the spines are all very dark coppery brown. Flowers look the same. They will look so nice when they get bigger and stand next to each other.
There is also version with white flowers. I'd like that too.
Those are such common cacti and available in supermarkets, that cacti collectors often don't pay attention to them much. Nothing fancy, flowers are small... but come on. They are cute :) And cheap!
And this is the copper sister.
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Shot with Nikon D5500 + Sigma 105mm lens
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