11005081 has 2 divisors, whose sum is σ = 11005082. Its totient is φ = 11005080.

The previous prime is 11005067. The next prime is 11005091. The reversal of 11005081 is 18050011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7241481 + 3763600 = 2691^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 11005081 - 2⁷ = 11004953 is a prime.

It is a super-2 number, since 2×11005081² = 242223615633122, 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, 5502540 + 5502541.

It is an arithmetic number, because the mean of its divisors is an integer number (5502541).

Almost surely, 2^11005081 is an apocalyptic number.

It is an amenable number.

11005081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11005081 is an equidigital number, since it uses as much as digits as its factorization.

11005081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 11005081 is about 3317.3906914923. The cubic root of 11005081 is about 222.4322463400.

Adding to 11005081 its reverse (18050011), we get a palindrome (29055092).

The spelling of 11005081 in words is "eleven million, five thousand, eighty-one".