8970173557 has 2 divisors, whose sum is σ = 8970173558. Its totient is φ = 8970173556.

The previous prime is 8970173461. The next prime is 8970173591. The reversal of 8970173557 is 7553710798.

8970173557 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., 8970173521 + 36 = 94711^2 + 6^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8970173557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8970173057) 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, 4485086778 + 4485086779.

It is an arithmetic number, because the mean of its divisors is an integer number (4485086779).

Almost surely, 2^8970173557 is an apocalyptic number.

It is an amenable number.

8970173557 is a deficient number, since it is larger than the sum of its proper divisors (1).

8970173557 is an equidigital number, since it uses as much as digits as its factorization.

8970173557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1852200, while the sum is 52.

The square root of 8970173557 is about 94711.0001900518. Note that the first 3 decimals coincide. The cubic root of 8970173557 is about 2077.7834465984.

The spelling of 8970173557 in words is "eight billion, nine hundred seventy million, one hundred seventy-three thousand, five hundred fifty-seven".