6005500561 has 4 divisors (see below), whose sum is σ = 6006834612. Its totient is φ = 6004166512.

The previous prime is 6005500531. The next prime is 6005500573. The reversal of 6005500561 is 1650055006.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2578100625 + 3427399936 = 50775^2 + 58544^2 .

It is a cyclic number.

It is not a de Polignac number, because 6005500561 - 2²⁵ = 5971946129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6005500531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660250 + ... + 669283.

It is an arithmetic number, because the mean of its divisors is an integer number (1501708653).

Almost surely, 2^6005500561 is an apocalyptic number.

It is an amenable number.

6005500561 is a deficient number, since it is larger than the sum of its proper divisors (1334051).

6005500561 is a wasteful number, since it uses less digits than its factorization.

6005500561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334050.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 6005500561 is about 77495.1647588416. The cubic root of 6005500561 is about 1817.6757111557.

Adding to 6005500561 its reverse (1650055006), we get a palindrome (7655555567).

The spelling of 6005500561 in words is "six billion, five million, five hundred thousand, five hundred sixty-one".