13226257 has 4 divisors (see below), whose sum is σ = 14428656. Its totient is φ = 12023860.

The previous prime is 13226251. The next prime is 13226263. The reversal of 13226257 is 75262231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75262231 = 11 ⋅6842021.

It is an interprime number because it is at equal distance from previous prime (13226251) and next prime (13226263).

It is a cyclic number.

It is not a de Polignac number, because 13226257 - 2¹⁵ = 13193489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13226251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601183 + ... + 601204.

It is an arithmetic number, because the mean of its divisors is an integer number (3607164).

Almost surely, 2^13226257 is an apocalyptic number.

It is an amenable number.

13226257 is a deficient number, since it is larger than the sum of its proper divisors (1202399).

13226257 is a wasteful number, since it uses less digits than its factorization.

13226257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202398.

The product of its digits is 5040, while the sum is 28.

The square root of 13226257 is about 3636.7921304358. The cubic root of 13226257 is about 236.4897483142.

Adding to 13226257 its reverse (75262231), we get a palindrome (88488488).

The spelling of 13226257 in words is "thirteen million, two hundred twenty-six thousand, two hundred fifty-seven".