3116561 has 8 divisors (see below), whose sum is σ = 3573504. Its totient is φ = 2662560.

The previous prime is 3116549. The next prime is 3116563. The reversal of 3116561 is 1656113.

It is a happy number.

3116561 is digitally balanced in base 2, 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 3116561 - 2⁶ = 3116497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3116563) 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, 2501 + ... + 3533.

It is an arithmetic number, because the mean of its divisors is an integer number (446688).

Almost surely, 2^3116561 is an apocalyptic number.

It is an amenable number.

3116561 is a deficient number, since it is larger than the sum of its proper divisors (456943).

3116561 is a wasteful number, since it uses less digits than its factorization.

3116561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471.

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

The square root of 3116561 is about 1765.3784296858. The cubic root of 3116561 is about 146.0691640774.

The spelling of 3116561 in words is "three million, one hundred sixteen thousand, five hundred sixty-one".