16551066 has 16 divisors (see below), whose sum is σ = 37831104. Its totient is φ = 4728864.

The previous prime is 16551061. The next prime is 16551079. The reversal of 16551066 is 66015561.

It is not an unprimeable number, because it can be changed into a prime (16551061) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 196995 + ... + 197078.

It is an arithmetic number, because the mean of its divisors is an integer number (2364444).

Almost surely, 2^16551066 is an apocalyptic number.

16551066 is an abundant number, since it is smaller than the sum of its proper divisors (21280038).

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

16551066 is a wasteful number, since it uses less digits than its factorization.

16551066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394085.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 16551066 is about 4068.3001364206. The cubic root of 16551066 is about 254.8445342253.

The spelling of 16551066 in words is "sixteen million, five hundred fifty-one thousand, sixty-six".