11053781 has 2 divisors, whose sum is σ = 11053782. Its totient is φ = 11053780.

The previous prime is 11053771. The next prime is 11053793. The reversal of 11053781 is 18735011.

11053781 is digitally balanced in base 2, 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., 10023556 + 1030225 = 3166^2 + 1015^2 .

It is a cyclic number.

It is not a de Polignac number, because 11053781 - 2⁶ = 11053717 is a prime.

It is a super-2 number, since 2×11053781² = 244372148791922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11053781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11053741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5526890 + 5526891.

It is an arithmetic number, because the mean of its divisors is an integer number (5526891).

Almost surely, 2^11053781 is an apocalyptic number.

It is an amenable number.

11053781 is a deficient number, since it is larger than the sum of its proper divisors (1).

11053781 is an equidigital number, since it uses as much as digits as its factorization.

11053781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 11053781 is about 3324.7226952033. The cubic root of 11053781 is about 222.7598680654.

Adding to 11053781 its reverse (18735011), we get a palindrome (29788792).

The spelling of 11053781 in words is "eleven million, fifty-three thousand, seven hundred eighty-one".