2444812561 has 2 divisors, whose sum is σ = 2444812562. Its totient is φ = 2444812560.

The previous prime is 2444812543. The next prime is 2444812649. The reversal of 2444812561 is 1652184442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1385700625 + 1059111936 = 37225^2 + 32544^2 .

It is a cyclic number.

It is not a de Polignac number, because 2444812561 - 2⁵ = 2444812529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2444812561.

It is not a weakly prime, because it can be changed into another prime (2444812501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222406280 + 1222406281.

It is an arithmetic number, because the mean of its divisors is an integer number (1222406281).

Almost surely, 2^2444812561 is an apocalyptic number.

It is an amenable number.

2444812561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2444812561 is an equidigital number, since it uses as much as digits as its factorization.

2444812561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 37.

The square root of 2444812561 is about 49445.0458691263. The cubic root of 2444812561 is about 1347.1476238144.

The spelling of 2444812561 in words is "two billion, four hundred forty-four million, eight hundred twelve thousand, five hundred sixty-one".