16551166 has 16 divisors (see below), whose sum is σ = 27671760. Its totient is φ = 7378560.

The previous prime is 16551163. The next prime is 16551209. The reversal of 16551166 is 66115561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16551163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12165 + ... + 13456.

It is an arithmetic number, because the mean of its divisors is an integer number (1729485).

Almost surely, 2^16551166 is an apocalyptic number.

16551166 is a deficient number, since it is larger than the sum of its proper divisors (11120594).

16551166 is a wasteful number, since it uses less digits than its factorization.

16551166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25659.

The product of its digits is 5400, while the sum is 31.

The square root of 16551166 is about 4068.3124265474. The cubic root of 16551166 is about 254.8450474733.

The spelling of 16551166 in words is "sixteen million, five hundred fifty-one thousand, one hundred sixty-six".