11481091 has 4 divisors (see below), whose sum is σ = 11508784. Its totient is φ = 11453400.

The previous prime is 11481077. The next prime is 11481109. The reversal of 11481091 is 19018411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19018411 = 19 ⋅1000969.

It is a cyclic number.

It is not a de Polignac number, because 11481091 - 2⁵ = 11481059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11481391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13215 + ... + 14056.

It is an arithmetic number, because the mean of its divisors is an integer number (2877196).

Almost surely, 2^11481091 is an apocalyptic number.

11481091 is a deficient number, since it is larger than the sum of its proper divisors (27693).

11481091 is an equidigital number, since it uses as much as digits as its factorization.

11481091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27692.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 11481091 is about 3388.3758646290. The cubic root of 11481091 is about 225.5940908848.

The spelling of 11481091 in words is "eleven million, four hundred eighty-one thousand, ninety-one".