2545566841 has 4 divisors (see below), whose sum is σ = 2547558400. Its totient is φ = 2543575284.

The previous prime is 2545566833. The next prime is 2545566853. The reversal of 2545566841 is 1486655452.

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 a cyclic number.

It is not a de Polignac number, because 2545566841 - 2³ = 2545566833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2545566791 and 2545566800.

It is not an unprimeable number, because it can be changed into a prime (2545566941) 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, 993861 + ... + 996418.

It is an arithmetic number, because the mean of its divisors is an integer number (636889600).

Almost surely, 2^2545566841 is an apocalyptic number.

It is an amenable number.

2545566841 is a deficient number, since it is larger than the sum of its proper divisors (1991559).

2545566841 is a wasteful number, since it uses less digits than its factorization.

2545566841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991558.

The product of its digits is 1152000, while the sum is 46.

The square root of 2545566841 is about 50453.6107825793. The cubic root of 2545566841 is about 1365.4050403856.

The spelling of 2545566841 in words is "two billion, five hundred forty-five million, five hundred sixty-six thousand, eight hundred forty-one".