6116561 has 4 divisors (see below), whose sum is σ = 6672624. Its totient is φ = 5560500.

The previous prime is 6116491. The next prime is 6116567. The reversal of 6116561 is 1656116.

6116561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 6116561 - 2¹⁰ = 6115537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6116561.

It is not an unprimeable number, because it can be changed into a prime (6116567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278015 + ... + 278036.

It is an arithmetic number, because the mean of its divisors is an integer number (1668156).

Almost surely, 2^6116561 is an apocalyptic number.

It is an amenable number.

6116561 is a deficient number, since it is larger than the sum of its proper divisors (556063).

6116561 is a wasteful number, since it uses less digits than its factorization.

6116561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556062.

The product of its digits is 1080, while the sum is 26.

The square root of 6116561 is about 2473.1682110200. The cubic root of 6116561 is about 182.8812172718.

The spelling of 6116561 in words is "six million, one hundred sixteen thousand, five hundred sixty-one".