13563223 has 2 divisors, whose sum is σ = 13563224. Its totient is φ = 13563222.

The previous prime is 13563211. The next prime is 13563227. The reversal of 13563223 is 32236531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13563223 - 2⁵ = 13563191 is a prime.

It is a super-2 number, since 2×13563223² = 367922036295458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13563227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6781611 + 6781612.

It is an arithmetic number, because the mean of its divisors is an integer number (6781612).

Almost surely, 2^13563223 is an apocalyptic number.

13563223 is a deficient number, since it is larger than the sum of its proper divisors (1).

13563223 is an equidigital number, since it uses as much as digits as its factorization.

13563223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 25.

The square root of 13563223 is about 3682.8281252320. The cubic root of 13563223 is about 238.4812837008.

Adding to 13563223 its reverse (32236531), we get a palindrome (45799754).

The spelling of 13563223 in words is "thirteen million, five hundred sixty-three thousand, two hundred twenty-three".