Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_53 ( rank INTEGER, silver VARCHAR, total VARCHAR )

### Question ###
What is the highest ranked nation with 15 silver medals and no more than 47 total?

### Accurate SQL ###

SELECT MAX(rank) FROM table_name_53 WHERE silver = 15 AND total < 47