13717257 has 8 divisors (see below), whose sum is σ = 18343776. Its totient is φ = 9117792.

The previous prime is 13717243. The next prime is 13717267. The reversal of 13717257 is 75271731.

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

It is not a de Polignac number, because 13717257 - 2¹⁴ = 13700873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13717217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5548 + ... + 7629.

It is an arithmetic number, because the mean of its divisors is an integer number (2292972).

Almost surely, 2^13717257 is an apocalyptic number.

It is an amenable number.

13717257 is a deficient number, since it is larger than the sum of its proper divisors (4626519).

13717257 is a wasteful number, since it uses less digits than its factorization.

13717257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13527.

The product of its digits is 10290, while the sum is 33.

The square root of 13717257 is about 3703.6815467856. The cubic root of 13717257 is about 239.3806775122.

Adding to 13717257 its reverse (75271731), we get a palindrome (88988988).

The spelling of 13717257 in words is "thirteen million, seven hundred seventeen thousand, two hundred fifty-seven".