Top quark properties at ATLAS

Discovered in 1995 by the CDF and D$\O$ experiments, the top quark is the heaviest known elementary particle. Its properties might offer a hint of physics beyond the standard model. It is thus of interest to measure them as precisely as possible. We present a summary of property measurements of the top quark which is produced by pp collisions of $\sqrt{s} = 7 \mathrm{TeV}$ at LHC. We have performed a measurement of the top quark charge, the inclusive $t\bar{t}\gamma$ cross section, the $W$ boson polarisation in top quark decays, the spin correlation in $t\bar{t}$ production and the charge asymmetry in $t\bar{t}$ production with the ATLAS Experiment. All measurement are in good agreement with the standard model prediction.