5208557993 has 2 divisors, whose sum is σ = 5208557994. Its totient is φ = 5208557992.

The previous prime is 5208557983. The next prime is 5208558011. The reversal of 5208557993 is 3997558025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3838669849 + 1369888144 = 61957^2 + 37012^2 .

It is a cyclic number.

It is not a de Polignac number, because 5208557993 - 2²⁶ = 5141449129 is a prime.

It is not a weakly prime, because it can be changed into another prime (5208557923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604278996 + 2604278997.

It is an arithmetic number, because the mean of its divisors is an integer number (2604278997).

Almost surely, 2^5208557993 is an apocalyptic number.

It is an amenable number.

5208557993 is a deficient number, since it is larger than the sum of its proper divisors (1).

5208557993 is an equidigital number, since it uses as much as digits as its factorization.

5208557993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402000, while the sum is 53.

The square root of 5208557993 is about 72170.3401197473. The cubic root of 5208557993 is about 1733.4281087683.

The spelling of 5208557993 in words is "five billion, two hundred eight million, five hundred fifty-seven thousand, nine hundred ninety-three".