8056545557 has 2 divisors, whose sum is σ = 8056545558. Its totient is φ = 8056545556.

The previous prime is 8056545533. The next prime is 8056545559. The reversal of 8056545557 is 7555456508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7494191761 + 562353796 = 86569^2 + 23714^2 .

It is a cyclic number.

It is not a de Polignac number, because 8056545557 - 2¹⁰ = 8056544533 is a prime.

Together with 8056545559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8056545559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4028272778 + 4028272779.

It is an arithmetic number, because the mean of its divisors is an integer number (4028272779).

Almost surely, 2^8056545557 is an apocalyptic number.

It is an amenable number.

8056545557 is a deficient number, since it is larger than the sum of its proper divisors (1).

8056545557 is an equidigital number, since it uses as much as digits as its factorization.

8056545557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200000, while the sum is 50.

The square root of 8056545557 is about 89758.2617757274. The cubic root of 8056545557 is about 2004.7010710576.

The spelling of 8056545557 in words is "eight billion, fifty-six million, five hundred forty-five thousand, five hundred fifty-seven".