13540223 has 2 divisors, whose sum is σ = 13540224. Its totient is φ = 13540222.

The previous prime is 13540207. The next prime is 13540229. The reversal of 13540223 is 32204531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13540223 - 2⁴ = 13540207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13540195 and 13540204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13540229) 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, 6770111 + 6770112.

It is an arithmetic number, because the mean of its divisors is an integer number (6770112).

Almost surely, 2^13540223 is an apocalyptic number.

13540223 is a deficient number, since it is larger than the sum of its proper divisors (1).

13540223 is an equidigital number, since it uses as much as digits as its factorization.

13540223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13540223 is about 3679.7042000683. The cubic root of 13540223 is about 238.3464049209.

Adding to 13540223 its reverse (32204531), we get a palindrome (45744754).

The spelling of 13540223 in words is "thirteen million, five hundred forty thousand, two hundred twenty-three".