16553316 has 48 divisors (see below), whose sum is σ = 43041600. Its totient is φ = 4916352.

The previous prime is 16553309. The next prime is 16553333. The reversal of 16553316 is 61335561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2695 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (896700).

Almost surely, 2^16553316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16553316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21520800).

16553316 is an abundant number, since it is smaller than the sum of its proper divisors (26488284).

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

16553316 is a wasteful number, since it uses less digits than its factorization.

16553316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708 (or 3706 counting only the distinct ones).

The product of its digits is 8100, while the sum is 30.

The square root of 16553316 is about 4068.5766552936. The cubic root of 16553316 is about 254.8560818042.

Adding to 16553316 its reverse (61335561), we get a palindrome (77888877).

The spelling of 16553316 in words is "sixteen million, five hundred fifty-three thousand, three hundred sixteen".