2573745539 has 2 divisors, whose sum is σ = 2573745540. Its totient is φ = 2573745538.

The previous prime is 2573745509. The next prime is 2573745541. The reversal of 2573745539 is 9355473752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2573745539 is a prime.

It is a Sophie Germain prime.

Together with 2573745541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2573745509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1286872769 + 1286872770.

It is an arithmetic number, because the mean of its divisors is an integer number (1286872770).

Almost surely, 2^2573745539 is an apocalyptic number.

2573745539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2573745539 is an equidigital number, since it uses as much as digits as its factorization.

2573745539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3969000, while the sum is 50.

The square root of 2573745539 is about 50732.0957481553. The cubic root of 2573745539 is about 1370.4247779726.

The spelling of 2573745539 in words is "two billion, five hundred seventy-three million, seven hundred forty-five thousand, five hundred thirty-nine".