11581199 has 12 divisors (see below), whose sum is σ = 14265504. Its totient is φ = 9342144.

The previous prime is 11581177. The next prime is 11581249. The reversal of 11581199 is 99118511.

11581199 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11581199 - 2¹² = 11577103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11581109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6119 + ... + 7784.

It is an arithmetic number, because the mean of its divisors is an integer number (1188792).

Almost surely, 2^11581199 is an apocalyptic number.

11581199 is a deficient number, since it is larger than the sum of its proper divisors (2684305).

11581199 is a wasteful number, since it uses less digits than its factorization.

11581199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13934 (or 13927 counting only the distinct ones).

The product of its digits is 3240, while the sum is 35.

The square root of 11581199 is about 3403.1160720728. The cubic root of 11581199 is about 226.2478745870.

The spelling of 11581199 in words is "eleven million, five hundred eighty-one thousand, one hundred ninety-nine".