8557545749 has 2 divisors, whose sum is σ = 8557545750. Its totient is φ = 8557545748.

The previous prime is 8557545701. The next prime is 8557545817. The reversal of 8557545749 is 9475457558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8275540900 + 282004849 = 90970^2 + 16793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8557545749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8557541749) 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, 4278772874 + 4278772875.

It is an arithmetic number, because the mean of its divisors is an integer number (4278772875).

Almost surely, 2^8557545749 is an apocalyptic number.

It is an amenable number.

8557545749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8557545749 is an equidigital number, since it uses as much as digits as its factorization.

8557545749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280000, while the sum is 59.

The square root of 8557545749 is about 92507.0037834974. The cubic root of 8557545749 is about 2045.4227240493.

The spelling of 8557545749 in words is "eight billion, five hundred fifty-seven million, five hundred forty-five thousand, seven hundred forty-nine".