11217513 has 8 divisors (see below), whose sum is σ = 14990976. Its totient is φ = 7461200.

The previous prime is 11217463. The next prime is 11217523. The reversal of 11217513 is 31571211.

It is a happy number.

11217513 is digitally balanced in base 2 and base 3, because in such bases 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 11217513 - 2⁹ = 11217001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11217513.

It is not an unprimeable number, because it can be changed into a prime (11217523) 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, 2673 + ... + 5438.

It is an arithmetic number, because the mean of its divisors is an integer number (1873872).

Almost surely, 2^11217513 is an apocalyptic number.

It is an amenable number.

11217513 is a deficient number, since it is larger than the sum of its proper divisors (3773463).

11217513 is an equidigital number, since it uses as much as digits as its factorization.

11217513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8575.

The product of its digits is 210, while the sum is 21.

The square root of 11217513 is about 3349.2555889332. The cubic root of 11217513 is about 223.8543443494.

Adding to 11217513 its reverse (31571211), we get a palindrome (42788724).

The spelling of 11217513 in words is "eleven million, two hundred seventeen thousand, five hundred thirteen".