11217256 has 8 divisors (see below), whose sum is σ = 21032370. Its totient is φ = 5608624.

The previous prime is 11217251. The next prime is 11217301. The reversal of 11217256 is 65271211.

It can be written as a sum of positive squares in only one way, i.e., 6421156 + 4796100 = 2534^2 + 2190^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 11217256.

It is not an unprimeable number, because it can be changed into a prime (11217251) 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 as a sum of consecutive naturals, namely, 701071 + ... + 701086.

Almost surely, 2^11217256 is an apocalyptic number.

It is an amenable number.

11217256 is a deficient number, since it is larger than the sum of its proper divisors (9815114).

11217256 is a wasteful number, since it uses less digits than its factorization.

11217256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402163 (or 1402159 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 11217256 is about 3349.2172219789. The cubic root of 11217256 is about 223.8526347903.

Adding to 11217256 its reverse (65271211), we get a palindrome (76488467).

The spelling of 11217256 in words is "eleven million, two hundred seventeen thousand, two hundred fifty-six".