16554 has 16 divisors (see below), whose sum is σ = 34560. Its totient is φ = 5280.

The previous prime is 16553. The next prime is 16561. The reversal of 16554 is 45561.

It is a happy number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 16554.

It is not an unprimeable number, because it can be changed into a prime (16553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142 + ... + 230.

It is an arithmetic number, because the mean of its divisors is an integer number (2160).

2¹⁶⁵⁵⁴ is an apocalyptic number.

16554 is an abundant number, since it is smaller than the sum of its proper divisors (18006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17280).

16554 is a wasteful number, since it uses less digits than its factorization.

16554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125.

The product of its digits is 600, while the sum is 21.

The square root of 16554 is about 128.6623488049. The cubic root of 16554 is about 25.4859592061.

It can be divided in two parts, 1 and 6554, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 16554 in words is "sixteen thousand, five hundred fifty-four".