16545223 has 2 divisors, whose sum is σ = 16545224. Its totient is φ = 16545222.

The previous prime is 16545209. The next prime is 16545241. The reversal of 16545223 is 32254561.

It is a weak prime.

It is an emirp because it is prime and its reverse (32254561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16545223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16545191 and 16545200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16545923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272611 + 8272612.

It is an arithmetic number, because the mean of its divisors is an integer number (8272612).

Almost surely, 2^16545223 is an apocalyptic number.

16545223 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545223 is an equidigital number, since it uses as much as digits as its factorization.

16545223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 16545223 is about 4067.5819598381. The cubic root of 16545223 is about 254.8145415575.

Adding to 16545223 its reverse (32254561), we get a palindrome (48799784).

The spelling of 16545223 in words is "sixteen million, five hundred forty-five thousand, two hundred twenty-three".