11063581 has 2 divisors, whose sum is σ = 11063582. Its totient is φ = 11063580.

The previous prime is 11063579. The next prime is 11063623. The reversal of 11063581 is 18536011.

11063581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7338681 + 3724900 = 2709^2 + 1930^2 .

It is a cyclic number.

It is not a de Polignac number, because 11063581 - 2¹ = 11063579 is a prime.

It is a super-2 number, since 2×11063581² = 244805649087122, which contains 22 as substring.

Together with 11063579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11063561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5531790 + 5531791.

It is an arithmetic number, because the mean of its divisors is an integer number (5531791).

Almost surely, 2^11063581 is an apocalyptic number.

It is an amenable number.

11063581 is a deficient number, since it is larger than the sum of its proper divisors (1).

11063581 is an equidigital number, since it uses as much as digits as its factorization.

11063581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 11063581 is about 3326.1961758140. The cubic root of 11063581 is about 222.8256796907.

Adding to 11063581 its reverse (18536011), we get a palindrome (29599592).

The spelling of 11063581 in words is "eleven million, sixty-three thousand, five hundred eighty-one".