11344561 has 4 divisors (see below), whose sum is σ = 11608432. Its totient is φ = 11080692.

The previous prime is 11344547. The next prime is 11344573. The reversal of 11344561 is 16544311.

11344561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11344561 - 2²¹ = 9247409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11344511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131871 + ... + 131956.

It is an arithmetic number, because the mean of its divisors is an integer number (2902108).

Almost surely, 2^11344561 is an apocalyptic number.

It is an amenable number.

11344561 is a deficient number, since it is larger than the sum of its proper divisors (263871).

11344561 is an equidigital number, since it uses as much as digits as its factorization.

11344561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263870.

The product of its digits is 1440, while the sum is 25.

The square root of 11344561 is about 3368.1687903073. The cubic root of 11344561 is about 224.6962881674.

Adding to 11344561 its reverse (16544311), we get a palindrome (27888872).

The spelling of 11344561 in words is "eleven million, three hundred forty-four thousand, five hundred sixty-one".