9011081 has 2 divisors, whose sum is σ = 9011082. Its totient is φ = 9011080.

The previous prime is 9011077. The next prime is 9011099. The reversal of 9011081 is 1801109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6175225 + 2835856 = 2485^2 + 1684^2 .

It is an emirp because it is prime and its reverse (1801109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9011081 - 2² = 9011077 is a prime.

It is a super-3 number, since 3×9011081³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is equal to p₆₀₃₁₃₇ and since 9011081 and 603137 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (9011281) 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 as a sum of consecutive naturals, namely, 4505540 + 4505541.

It is an arithmetic number, because the mean of its divisors is an integer number (4505541).

Almost surely, 2^9011081 is an apocalyptic number.

It is an amenable number.

9011081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9011081 is an equidigital number, since it uses as much as digits as its factorization.

9011081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 9011081 is about 3001.8462652175. The cubic root of 9011081 is about 208.0937154743.

It can be divided in two parts, 901108 and 1, that added together give a palindrome (901109).

The spelling of 9011081 in words is "nine million, eleven thousand, eighty-one".