11521256 has 16 divisors (see below), whose sum is σ = 21643200. Its totient is φ = 5749744.

The previous prime is 11521249. The next prime is 11521259. The reversal of 11521256 is 65212511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11521259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4751 + ... + 6753.

It is an arithmetic number, because the mean of its divisors is an integer number (1352700).

Almost surely, 2^11521256 is an apocalyptic number.

It is an amenable number.

11521256 is a deficient number, since it is larger than the sum of its proper divisors (10121944).

11521256 is a wasteful number, since it uses less digits than its factorization.

11521256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728 (or 2724 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 11521256 is about 3394.2975709269. The cubic root of 11521256 is about 225.8568545585.

Adding to 11521256 its reverse (65212511), we get a palindrome (76733767).

The spelling of 11521256 in words is "eleven million, five hundred twenty-one thousand, two hundred fifty-six".