2305448561 has 4 divisors (see below), whose sum is σ = 2482790772. Its totient is φ = 2128106352.

The previous prime is 2305448549. The next prime is 2305448599. The reversal of 2305448561 is 1658445032.

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 186595600 + 2118852961 = 13660^2 + 46031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2305448561 - 2³⁰ = 1231706737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2305448531) 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, 88671086 + ... + 88671111.

It is an arithmetic number, because the mean of its divisors is an integer number (620697693).

Almost surely, 2^2305448561 is an apocalyptic number.

It is an amenable number.

2305448561 is a deficient number, since it is larger than the sum of its proper divisors (177342211).

2305448561 is a wasteful number, since it uses less digits than its factorization.

2305448561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177342210.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 2305448561 is about 48015.0868061279. The cubic root of 2305448561 is about 1321.0476380414.

The spelling of 2305448561 in words is "two billion, three hundred five million, four hundred forty-eight thousand, five hundred sixty-one".