11005091 has 2 divisors, whose sum is σ = 11005092. Its totient is φ = 11005090.

The previous prime is 11005081. The next prime is 11005151. The reversal of 11005091 is 19050011.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19050011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11005091 - 2¹⁸ = 10742947 is a prime.

It is a super-2 number, since 2×11005091² = 242224055836562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11005051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5502545 + 5502546.

It is an arithmetic number, because the mean of its divisors is an integer number (5502546).

Almost surely, 2^11005091 is an apocalyptic number.

11005091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11005091 is an equidigital number, since it uses as much as digits as its factorization.

11005091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 11005091 is about 3317.3921987007. The cubic root of 11005091 is about 222.4323137126.

The spelling of 11005091 in words is "eleven million, five thousand, ninety-one".