11511061 has 2 divisors, whose sum is σ = 11511062. Its totient is φ = 11511060.

The previous prime is 11511047. The next prime is 11511079. The reversal of 11511061 is 16011511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7535025 + 3976036 = 2745^2 + 1994^2 .

It is an emirp because it is prime and its reverse (16011511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11511061 - 2⁵ = 11511029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11511001) 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, 5755530 + 5755531.

It is an arithmetic number, because the mean of its divisors is an integer number (5755531).

Almost surely, 2^11511061 is an apocalyptic number.

It is an amenable number.

11511061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11511061 is an equidigital number, since it uses as much as digits as its factorization.

11511061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 11511061 is about 3392.7954550783. The cubic root of 11511061 is about 225.7902156970.

Adding to 11511061 its reverse (16011511), we get a palindrome (27522572).

The spelling of 11511061 in words is "eleven million, five hundred eleven thousand, sixty-one".