4947680557 has 2 divisors, whose sum is σ = 4947680558. Its totient is φ = 4947680556.

The previous prime is 4947680533. The next prime is 4947680567. The reversal of 4947680557 is 7550867494.

4947680557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2538245161 + 2409435396 = 50381^2 + 49086^2 .

It is a cyclic number.

It is not a de Polignac number, because 4947680557 - 2⁷ = 4947680429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4947680498 and 4947680507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4947680567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2473840278 + 2473840279.

It is an arithmetic number, because the mean of its divisors is an integer number (2473840279).

Almost surely, 2^4947680557 is an apocalyptic number.

It is an amenable number.

4947680557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4947680557 is an equidigital number, since it uses as much as digits as its factorization.

4947680557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The square root of 4947680557 is about 70339.7509023170. The cubic root of 4947680557 is about 1703.9906889153.

The spelling of 4947680557 in words is "four billion, nine hundred forty-seven million, six hundred eighty thousand, five hundred fifty-seven".