($11) NL - Calling a pre-flop allin in round 1 with AKo

[qwerty]

Already one player eliminated. In the 3 hands played before, two have been raise 100 pre-flop.
I am in the button with $755 and AKo.

UTG, UTG+1 and cutoff limp, I raise to 100. UTG calls and cutoff raises to 655 AllIn.

I call 555, UTG folds.

Is my call a no-brainer?