11561361 has 8 divisors (see below), whose sum is σ = 17617344. Its totient is φ = 6606480.

The previous prime is 11561359. The next prime is 11561371. The reversal of 11561361 is 16316511.

11561361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11561361 - 2¹ = 11561359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11561321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275250 + ... + 275291.

It is an arithmetic number, because the mean of its divisors is an integer number (2202168).

Almost surely, 2^11561361 is an apocalyptic number.

It is an amenable number.

11561361 is a deficient number, since it is larger than the sum of its proper divisors (6055983).

11561361 is an equidigital number, since it uses as much as digits as its factorization.

11561361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550551.

The product of its digits is 540, while the sum is 24.

The square root of 11561361 is about 3400.2001411682. The cubic root of 11561361 is about 226.1186170861.

Adding to 11561361 its reverse (16316511), we get a palindrome (27877872).

The spelling of 11561361 in words is "eleven million, five hundred sixty-one thousand, three hundred sixty-one".