What is the power of 10 when 157,821 is written in scientific notation?

Scientific is a method of expressing numbers that are too big or too small to be conveniently written in decimal form. We write the number 1 57,821 by moving the decimal place to the left until the first number, taking note of the number of times you moved it. Therefore, it is written as 1.57821 x 10^5. The power of 10 would be 5.