16564151 has 4 divisors (see below), whose sum is σ = 16725072. Its totient is φ = 16403232.

The previous prime is 16564129. The next prime is 16564157. The reversal of 16564151 is 15146561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16564151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16564157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80306 + ... + 80511.

It is an arithmetic number, because the mean of its divisors is an integer number (4181268).

Almost surely, 2^16564151 is an apocalyptic number.

16564151 is a deficient number, since it is larger than the sum of its proper divisors (160921).

16564151 is a wasteful number, since it uses less digits than its factorization.

16564151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160920.

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

The square root of 16564151 is about 4069.9079842178. The cubic root of 16564151 is about 254.9116751645.

The spelling of 16564151 in words is "sixteen million, five hundred sixty-four thousand, one hundred fifty-one".