My rank in JEE is 54000. Can I get a seat in central universities like IIITs or NITs?

No, you cannot get admission in the NIT or IIIT, as your rank is very high. You can get good government and private engineering college like Nirma University, Chandigarh University, Galgotia University, Amity University, JECRC College Jaipur Arya College Jaipur, Poornima engineering college, Jaipur