6561113 has 8 divisors (see below), whose sum is σ = 7088256. Its totient is φ = 6037200.

The previous prime is 6561103. The next prime is 6561127. The reversal of 6561113 is 3111656.

It is a happy number.

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

It is not a de Polignac number, because 6561113 - 2⁴ = 6561097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6561103) 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 7 ways as a sum of consecutive naturals, for example, 5018 + ... + 6188.

It is an arithmetic number, because the mean of its divisors is an integer number (886032).

Almost surely, 2^6561113 is an apocalyptic number.

It is an amenable number.

6561113 is a deficient number, since it is larger than the sum of its proper divisors (527143).

6561113 is a wasteful number, since it uses less digits than its factorization.

6561113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615.

The product of its digits is 540, while the sum is 23.

The square root of 6561113 is about 2561.4669625041. The cubic root of 6561113 is about 187.2086188260.

Adding to 6561113 its reverse (3111656), we get a palindrome (9672769).

The spelling of 6561113 in words is "six million, five hundred sixty-one thousand, one hundred thirteen".