16550216 has 16 divisors (see below), whose sum is σ = 32665200. Its totient is φ = 7839504.

The previous prime is 16550189. The next prime is 16550239. The reversal of 16550216 is 61205561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54290 + ... + 54593.

It is an arithmetic number, because the mean of its divisors is an integer number (2041575).

Almost surely, 2^16550216 is an apocalyptic number.

It is an amenable number.

16550216 is a deficient number, since it is larger than the sum of its proper divisors (16114984).

16550216 is a wasteful number, since it uses less digits than its factorization.

16550216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108908 (or 108904 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 16550216 is about 4068.1956688439. The cubic root of 16550216 is about 254.8401715343.

Adding to 16550216 its reverse (61205561), we get a palindrome (77755777).

The spelling of 16550216 in words is "sixteen million, five hundred fifty thousand, two hundred sixteen".