11563361 has 2 divisors, whose sum is σ = 11563362. Its totient is φ = 11563360.

The previous prime is 11563339. The next prime is 11563369. The reversal of 11563361 is 16336511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11015761 + 547600 = 3319^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 11563361 - 2¹⁰ = 11562337 is a prime.

It is a super-2 number, since 2×11563361² = 267422635232642, 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 11563361.

It is not a weakly prime, because it can be changed into another prime (11563369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5781680 + 5781681.

It is an arithmetic number, because the mean of its divisors is an integer number (5781681).

Almost surely, 2^11563361 is an apocalyptic number.

It is an amenable number.

11563361 is a deficient number, since it is larger than the sum of its proper divisors (1).

11563361 is an equidigital number, since it uses as much as digits as its factorization.

11563361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 26.

The square root of 11563361 is about 3400.4942287850. The cubic root of 11563361 is about 226.1316550885.

Adding to 11563361 its reverse (16336511), we get a palindrome (27899872).

The spelling of 11563361 in words is "eleven million, five hundred sixty-three thousand, three hundred sixty-one".