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_15905399_1 ( length VARCHAR, iin_ranges VARCHAR )

### Question ###
What is the length for iin range 51-55?

### Accurate SQL ###

SELECT length FROM table_15905399_1 WHERE iin_ranges = "51-55"