16543222 has 4 divisors (see below), whose sum is σ = 24814836. Its totient is φ = 8271610.

The previous prime is 16543217. The next prime is 16543229. The reversal of 16543222 is 22234561.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16543229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4135804 + ... + 4135807.

It is an arithmetic number, because the mean of its divisors is an integer number (6203709).

Almost surely, 2^16543222 is an apocalyptic number.

16543222 is a deficient number, since it is larger than the sum of its proper divisors (8271614).

16543222 is an equidigital number, since it uses as much as digits as its factorization.

16543222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271613.

The product of its digits is 2880, while the sum is 25.

The square root of 16543222 is about 4067.3359831713. The cubic root of 16543222 is about 254.8042686134.

Adding to 16543222 its reverse (22234561), we get a palindrome (38777783).

The spelling of 16543222 in words is "sixteen million, five hundred forty-three thousand, two hundred twenty-two".