16651145 has 16 divisors (see below), whose sum is σ = 22913280. Its totient is φ = 11379264.

The previous prime is 16651127. The next prime is 16651153. The reversal of 16651145 is 54115661.

It is a cyclic number.

It is not a de Polignac number, because 16651145 - 2¹⁰ = 16650121 is a prime.

It is a super-2 number, since 2×16651145² = 554521259622050, which contains 22 as substring.

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, 13004 + ... + 14226.

It is an arithmetic number, because the mean of its divisors is an integer number (1432080).

Almost surely, 2^16651145 is an apocalyptic number.

It is an amenable number.

16651145 is a deficient number, since it is larger than the sum of its proper divisors (6262135).

16651145 is a wasteful number, since it uses less digits than its factorization.

16651145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624.

The product of its digits is 3600, while the sum is 29.

The square root of 16651145 is about 4080.5814536656. The cubic root of 16651145 is about 255.3571568385.

The spelling of 16651145 in words is "sixteen million, six hundred fifty-one thousand, one hundred forty-five".