Your rank can be predicted by using the formula, (100-your total percentile)*869010/100. In your case, your approximate rank would be 420600. Let's say the number of candidates for April exam increased to 12,00,000 then your final rank shall be (100 - your total score) X 12,00,000/100. Please use our College predictor for checking the possibility of colleges:

Hello,

Your percentile is 51.6 , you can calculate your rank by using the formula given below

(100-your total percentile)X 869010/100

i.e Your rank will be 420600 i.e between 410000-510000

We don't have rank on category basis now.

But you can check the college predictor by using the below link

https://engineering.careers360.com/jee-main-college-predictor

You can find out the colleges according to your percentile and SC category