Window AC fan not working

I have an LG 18000 BTU window unit that does and doesn’t work. The compressor will run but the fan doesn’t. There is power getting to the motor, but it just hums. I gave the fan blades a good spin and the motor started spinning. However, the whole unit shut off after about 15 minutes and the motor was extremely hot. Not sure if this is normal? Any ideas what could be the problem?