11554891 has 2 divisors, whose sum is σ = 11554892. Its totient is φ = 11554890.

The previous prime is 11554877. The next prime is 11554913. The reversal of 11554891 is 19845511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11554891 - 2¹⁵ = 11522123 is a prime.

It is not a weakly prime, because it can be changed into another prime (11554811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777445 + 5777446.

It is an arithmetic number, because the mean of its divisors is an integer number (5777446).

Almost surely, 2^11554891 is an apocalyptic number.

11554891 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554891 is an equidigital number, since it uses as much as digits as its factorization.

11554891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 34.

The square root of 11554891 is about 3399.2485934394. The cubic root of 11554891 is about 226.0764288453.

The spelling of 11554891 in words is "eleven million, five hundred fifty-four thousand, eight hundred ninety-one".