13427561 has 8 divisors (see below), whose sum is σ = 16013184. Its totient is φ = 11008800.

The previous prime is 13427549. The next prime is 13427563. The reversal of 13427561 is 16572431.

13427561 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 a cyclic number.

It is not a de Polignac number, because 13427561 - 2¹⁸ = 13165417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13427563) 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 in 7 ways as a sum of consecutive naturals, for example, 41540 + ... + 41861.

It is an arithmetic number, because the mean of its divisors is an integer number (2001648).

Almost surely, 2^13427561 is an apocalyptic number.

It is an amenable number.

13427561 is a deficient number, since it is larger than the sum of its proper divisors (2585623).

13427561 is an equidigital number, since it uses as much as digits as its factorization.

13427561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83431.

The product of its digits is 5040, while the sum is 29.

The square root of 13427561 is about 3664.3636555342. The cubic root of 13427561 is about 237.6835058220.

Adding to 13427561 its reverse (16572431), we get a palindrome (29999992).

The spelling of 13427561 in words is "thirteen million, four hundred twenty-seven thousand, five hundred sixty-one".