5561307905 has 8 divisors (see below), whose sum is σ = 6684389352. Its totient is φ = 4441833088.

The previous prime is 5561307901. The next prime is 5561307953. The reversal of 5561307905 is 5097031655.

5561307905 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 221206129 + 5340101776 = 14873^2 + 73076^2 .

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 5561307905 - 2² = 5561307901 is a prime.

It is a super-2 number, since 2×5561307905² = 61856291228430978050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5561307901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898262 + ... + 904431.

It is an arithmetic number, because the mean of its divisors is an integer number (835548669).

Almost surely, 2^5561307905 is an apocalyptic number.

It is an amenable number.

5561307905 is a deficient number, since it is larger than the sum of its proper divisors (1123081447).

5561307905 is a wasteful number, since it uses less digits than its factorization.

5561307905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803315.

The product of its (nonzero) digits is 141750, while the sum is 41.

The square root of 5561307905 is about 74574.1771996178. The cubic root of 5561307905 is about 1771.7086827914.

The spelling of 5561307905 in words is "five billion, five hundred sixty-one million, three hundred seven thousand, nine hundred five".