13444257 has 8 divisors (see below), whose sum is σ = 18141984. Its totient is φ = 8854688.

The previous prime is 13444253. The next prime is 13444279. The reversal of 13444257 is 75244431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13444257 - 2² = 13444253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13444253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26748 + ... + 27245.

It is an arithmetic number, because the mean of its divisors is an integer number (2267748).

Almost surely, 2^13444257 is an apocalyptic number.

It is an amenable number.

13444257 is a deficient number, since it is larger than the sum of its proper divisors (4697727).

13444257 is an equidigital number, since it uses as much as digits as its factorization.

13444257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54079.

The product of its digits is 13440, while the sum is 30.

The square root of 13444257 is about 3666.6411059715. The cubic root of 13444257 is about 237.7819779168.

Adding to 13444257 its reverse (75244431), we get a palindrome (88688688).

The spelling of 13444257 in words is "thirteen million, four hundred forty-four thousand, two hundred fifty-seven".