5616561 has 8 divisors (see below), whose sum is σ = 7508224. Its totient is φ = 3734640.

The previous prime is 5616557. The next prime is 5616587. The reversal of 5616561 is 1656165.

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

It is not a de Polignac number, because 5616561 - 2² = 5616557 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5616161) 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, 961 + ... + 3486.

It is an arithmetic number, because the mean of its divisors is an integer number (938528).

Almost surely, 2^5616561 is an apocalyptic number.

It is an amenable number.

5616561 is a deficient number, since it is larger than the sum of its proper divisors (1891663).

5616561 is a wasteful number, since it uses less digits than its factorization.

5616561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871.

The product of its digits is 5400, while the sum is 30.

The square root of 5616561 is about 2369.9284799335. The cubic root of 5616561 is about 177.7556825694.

The spelling of 5616561 in words is "five million, six hundred sixteen thousand, five hundred sixty-one".