2545797641 has 2 divisors, whose sum is σ = 2545797642. Its totient is φ = 2545797640.

The previous prime is 2545797587. The next prime is 2545797643. The reversal of 2545797641 is 1467975452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2383490041 + 162307600 = 48821^2 + 12740^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545797641 - 2¹⁴ = 2545781257 is a prime.

Together with 2545797643, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2545797641.

It is not a weakly prime, because it can be changed into another prime (2545797643) 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 as a sum of consecutive naturals, namely, 1272898820 + 1272898821.

It is an arithmetic number, because the mean of its divisors is an integer number (1272898821).

Almost surely, 2^2545797641 is an apocalyptic number.

It is an amenable number.

2545797641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545797641 is an equidigital number, since it uses as much as digits as its factorization.

2545797641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2116800, while the sum is 50.

The square root of 2545797641 is about 50455.8979803154. The cubic root of 2545797641 is about 1365.4463050598.

The spelling of 2545797641 in words is "two billion, five hundred forty-five million, seven hundred ninety-seven thousand, six hundred forty-one".