8005740557 has 2 divisors, whose sum is σ = 8005740558. Its totient is φ = 8005740556.

The previous prime is 8005740527. The next prime is 8005740581. The reversal of 8005740557 is 7550475008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7742944036 + 262796521 = 87994^2 + 16211^2 .

It is a cyclic number.

It is not a de Polignac number, because 8005740557 - 2¹² = 8005736461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8005740527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4002870278 + 4002870279.

It is an arithmetic number, because the mean of its divisors is an integer number (4002870279).

Almost surely, 2^8005740557 is an apocalyptic number.

It is an amenable number.

8005740557 is a deficient number, since it is larger than the sum of its proper divisors (1).

8005740557 is an equidigital number, since it uses as much as digits as its factorization.

8005740557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 8005740557 is about 89474.8040344320. The cubic root of 8005740557 is about 2000.4782653720.

The spelling of 8005740557 in words is "eight billion, five million, seven hundred forty thousand, five hundred fifty-seven".