Whats wrong with the following sqlite statement in android

What is wrong with the following code? I get the following error

unrecognized token: "12345" (code 1): , while compiling: SELECT id, flag FROM myTable WHERE snumber=12345

String number = "12345";    
public static final String SNUMBER = "snumber";
public static final String ID = "id";
public static final  String FLAG = "flag";

String[] thecolumns = new String[] { ID, FLAG };

Cursor cursor = sqlDb.query(TABLE_NAME , thecolumns, SNUMBER+ "=" + number, null, null,   null, null);