How much does the POTUS cost American taxpayers per year

I was looking at the cost of the inauguration in another thread and I wondered.

How much does the POTUS cost American taxpayers per year?

I am British and I know that how much government costs

i.e.

For the UK direct and indirect expenses of EU membership currently stands at £55.775 billion per year

The Queen and the Royal Family costs £40 million per year

Tony Blair's salary was £183,000