11556859 has 2 divisors, whose sum is σ = 11556860. Its totient is φ = 11556858.

The previous prime is 11556841. The next prime is 11556907. The reversal of 11556859 is 95865511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11556859 - 2⁵ = 11556827 is a prime.

It is a super-3 number, since 3×11556859³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11556829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778429 + 5778430.

It is an arithmetic number, because the mean of its divisors is an integer number (5778430).

Almost surely, 2^11556859 is an apocalyptic number.

11556859 is a deficient number, since it is larger than the sum of its proper divisors (1).

11556859 is an equidigital number, since it uses as much as digits as its factorization.

11556859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 40.

The square root of 11556859 is about 3399.5380568542. The cubic root of 11556859 is about 226.0892630398.

The spelling of 11556859 in words is "eleven million, five hundred fifty-six thousand, eight hundred fifty-nine".