13538223 has 6 divisors (see below), whose sum is σ = 19555224. Its totient is φ = 9025476.

The previous prime is 13538197. The next prime is 13538233. The reversal of 13538223 is 32283531.

It is not a de Polignac number, because 13538223 - 2²⁰ = 12489647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13538233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752115 + ... + 752132.

It is an arithmetic number, because the mean of its divisors is an integer number (3259204).

Almost surely, 2^13538223 is an apocalyptic number.

13538223 is a deficient number, since it is larger than the sum of its proper divisors (6017001).

13538223 is a wasteful number, since it uses less digits than its factorization.

13538223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504253 (or 1504250 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 13538223 is about 3679.4324290575. The cubic root of 13538223 is about 238.3346691152.

The spelling of 13538223 in words is "thirteen million, five hundred thirty-eight thousand, two hundred twenty-three".