Is Crestor (Statin) An ACE Inhibitor? I'm Told I Need

Is Crestor (Statin) an ACE inhibitor? I'm told I need 4,700mg potassium per day. I've had AF and subsequently a very successful Ablation. I had a brief relapse recently due to gastro resulting in low potassium and magnesium. I struggling to get the daily potassium requirement and am unsure how much I really need to worry about this.