Explanation:

- Start by rearranging the digits of each number in ascending order:

- 453 becomes 345

- 619 becomes 169

- 574 becomes 457

- 471 becomes 147

- 372 becomes 237

- Once rearranged, list the new numbers:

- 147, 169, 237, 345, 457

- Identify the second lowest number from the list:

- 147 is the lowest.

- 169 is the second lowest.

- Match the rearranged number to the original:

- 169 corresponds to 619.

Thus, the second lowest number is 619.