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_28240 ( "NSG Nr." real, "Name of the nature reserve" text, "District / Town" text, "Area (ha)" text, "Date established" text )

### Question ###
How many names does nature reserve 54 have?

### Accurate SQL ###

SELECT COUNT("Name of the nature reserve") FROM table_28240 WHERE "NSG Nr." = '54'