What is 549,423 rounded to the nearest thousand

Can someone answer this question? : )

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

If a is a nonzero real number then the reciprocal of a is