11256247 has 2 divisors, whose sum is σ = 11256248. Its totient is φ = 11256246.

The previous prime is 11256221. The next prime is 11256253. The reversal of 11256247 is 74265211.

It is a strong prime.

It is an emirp because it is prime and its reverse (74265211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11256247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11256347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628123 + 5628124.

It is an arithmetic number, because the mean of its divisors is an integer number (5628124).

Almost surely, 2^11256247 is an apocalyptic number.

11256247 is a deficient number, since it is larger than the sum of its proper divisors (1).

11256247 is an equidigital number, since it uses as much as digits as its factorization.

11256247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 11256247 is about 3355.0330847847. The cubic root of 11256247 is about 224.1117042245. Note that the first 3 decimals are identical.

The spelling of 11256247 in words is "eleven million, two hundred fifty-six thousand, two hundred forty-seven".