128557159 has 2 divisors, whose sum is σ = 128557160. Its totient is φ = 128557158.

The previous prime is 128557157. The next prime is 128557193. The reversal of 128557159 is 951755821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128557159 - 2¹ = 128557157 is a prime.

Together with 128557157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128557151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64278579 + 64278580.

It is an arithmetic number, because the mean of its divisors is an integer number (64278580).

Almost surely, 2^128557159 is an apocalyptic number.

128557159 is a deficient number, since it is larger than the sum of its proper divisors (1).

128557159 is an equidigital number, since it uses as much as digits as its factorization.

128557159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 43.

The square root of 128557159 is about 11338.3049438618. The cubic root of 128557159 is about 504.6985869227.

The spelling of 128557159 in words is "one hundred twenty-eight million, five hundred fifty-seven thousand, one hundred fifty-nine".