The Count to 1000

[chaitanya]

165 is:

-> an odd number, a composite number, and a deficient number.
-> a sphenic number.
-> a tetrahedral number
-> the sum of the sums of the divisors of the first 14 positive integers.
-> a self number in base 10.
-> a palindromic number in binary (101001012) and bases 14 (BB14), 32 (5532) and 54 (3354).
-> a unique period in base 2.