There are six zeros in 5 million.
To determine the number of zeros, we can count the number of place value positions in the number. In 5 million, there are six place value positions after the digit 5: 5,000,000. Each place value position represents a power of 10, and the number of zeros corresponds to the power of 10. In this case, there are six zeros, indicating that 5 million is equal to 5 x 10^6.