11087291 has 4 divisors (see below), whose sum is σ = 11129712. Its totient is φ = 11044872.

The previous prime is 11087269. The next prime is 11087327. The reversal of 11087291 is 19278011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11087291 - 2¹⁰ = 11086267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11087201) 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, 20816 + ... + 21341.

It is an arithmetic number, because the mean of its divisors is an integer number (2782428).

Almost surely, 2^11087291 is an apocalyptic number.

11087291 is a deficient number, since it is larger than the sum of its proper divisors (42421).

11087291 is an equidigital number, since it uses as much as digits as its factorization.

11087291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42420.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 11087291 is about 3329.7583996440. The cubic root of 11087291 is about 222.9847429352.

The spelling of 11087291 in words is "eleven million, eighty-seven thousand, two hundred ninety-one".