2144504561 has 2 divisors, whose sum is σ = 2144504562. Its totient is φ = 2144504560.

The previous prime is 2144504513. The next prime is 2144504569. The reversal of 2144504561 is 1654054412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2105066161 + 39438400 = 45881^2 + 6280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2144504561 is a prime.

It is not a weakly prime, because it can be changed into another prime (2144504569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072252280 + 1072252281.

It is an arithmetic number, because the mean of its divisors is an integer number (1072252281).

Almost surely, 2^2144504561 is an apocalyptic number.

It is an amenable number.

2144504561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144504561 is an equidigital number, since it uses as much as digits as its factorization.

2144504561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 2144504561 is about 46308.7957196039. The cubic root of 2144504561 is about 1289.5622898524.

Adding to 2144504561 its reverse (1654054412), we get a palindrome (3798558973).

The spelling of 2144504561 in words is "two billion, one hundred forty-four million, five hundred four thousand, five hundred sixty-one".