13445223 has 16 divisors (see below), whose sum is σ = 19673472. Its totient is φ = 8100000.

The previous prime is 13445219. The next prime is 13445231. The reversal of 13445223 is 32254431.

13445223 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13445223 - 2² = 13445219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13445193 and 13445202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13445203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4848 + ... + 7098.

It is an arithmetic number, because the mean of its divisors is an integer number (1229592).

Almost surely, 2^13445223 is an apocalyptic number.

13445223 is a deficient number, since it is larger than the sum of its proper divisors (6228249).

13445223 is a wasteful number, since it uses less digits than its factorization.

13445223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446.

The product of its digits is 2880, while the sum is 24.

The square root of 13445223 is about 3666.7728317964. The cubic root of 13445223 is about 237.7876728364.

Adding to 13445223 its reverse (32254431), we get a palindrome (45699654).

The spelling of 13445223 in words is "thirteen million, four hundred forty-five thousand, two hundred twenty-three".