11217257 has 8 divisors (see below), whose sum is σ = 11777280. Its totient is φ = 10669680.

The previous prime is 11217251. The next prime is 11217301. The reversal of 11217257 is 75271211.

11217257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11217257 - 2⁸ = 11217001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11217251) 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, 1238 + ... + 4895.

It is an arithmetic number, because the mean of its divisors is an integer number (1472160).

Almost surely, 2^11217257 is an apocalyptic number.

It is an amenable number.

11217257 is a deficient number, since it is larger than the sum of its proper divisors (560023).

11217257 is an equidigital number, since it uses as much as digits as its factorization.

11217257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223.

The product of its digits is 980, while the sum is 26.

The square root of 11217257 is about 3349.2173712675. The cubic root of 11217257 is about 223.8526414423.

Adding to 11217257 its reverse (75271211), we get a palindrome (86488468).

The spelling of 11217257 in words is "eleven million, two hundred seventeen thousand, two hundred fifty-seven".