11413561 has 4 divisors (see below), whose sum is σ = 11440000. Its totient is φ = 11387124.

The previous prime is 11413553. The next prime is 11413601. The reversal of 11413561 is 16531411.

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 11413561 - 2³ = 11413553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11413531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12561 + ... + 13438.

It is an arithmetic number, because the mean of its divisors is an integer number (2860000).

Almost surely, 2^11413561 is an apocalyptic number.

It is an amenable number.

11413561 is a deficient number, since it is larger than the sum of its proper divisors (26439).

11413561 is an equidigital number, since it uses as much as digits as its factorization.

11413561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26438.

The product of its digits is 360, while the sum is 22.

The square root of 11413561 is about 3378.3962171421. The cubic root of 11413561 is about 225.1509176801.

Adding to 11413561 its reverse (16531411), we get a palindrome (27944972).

The spelling of 11413561 in words is "eleven million, four hundred thirteen thousand, five hundred sixty-one".