8549556049 has 2 divisors, whose sum is σ = 8549556050. Its totient is φ = 8549556048.

The previous prime is 8549556023. The next prime is 8549556083. The reversal of 8549556049 is 9406559458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8166375424 + 383180625 = 90368^2 + 19575^2 .

It is a cyclic number.

It is not a de Polignac number, because 8549556049 - 2¹⁷ = 8549424977 is a prime.

It is not a weakly prime, because it can be changed into another prime (8549556089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4274778024 + 4274778025.

It is an arithmetic number, because the mean of its divisors is an integer number (4274778025).

Almost surely, 2^8549556049 is an apocalyptic number.

It is an amenable number.

8549556049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8549556049 is an equidigital number, since it uses as much as digits as its factorization.

8549556049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776000, while the sum is 55.

The square root of 8549556049 is about 92463.8094013004. The cubic root of 8549556049 is about 2044.7859603858.

The spelling of 8549556049 in words is "eight billion, five hundred forty-nine million, five hundred fifty-six thousand, forty-nine".