11847257 has 2 divisors, whose sum is σ = 11847258. Its totient is φ = 11847256.

The previous prime is 11847233. The next prime is 11847263. The reversal of 11847257 is 75274811.

11847257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8271376 + 3575881 = 2876^2 + 1891^2 .

It is a cyclic number.

It is not a de Polignac number, because 11847257 - 2¹⁴ = 11830873 is a prime.

It is not a weakly prime, because it can be changed into another prime (11843257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5923628 + 5923629.

It is an arithmetic number, because the mean of its divisors is an integer number (5923629).

Almost surely, 2^11847257 is an apocalyptic number.

It is an amenable number.

11847257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11847257 is an equidigital number, since it uses as much as digits as its factorization.

11847257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 35.

The square root of 11847257 is about 3441.9844566761. The cubic root of 11847257 is about 227.9673250087.

The spelling of 11847257 in words is "eleven million, eight hundred forty-seven thousand, two hundred fifty-seven".