128551075 has 6 divisors (see below), whose sum is σ = 159403364. Its totient is φ = 102840840.

The previous prime is 128551057. The next prime is 128551081. The reversal of 128551075 is 570155821.

It is not a de Polignac number, because 128551075 - 2⁵ = 128551043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128551075.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2570997 + ... + 2571046.

Almost surely, 2^128551075 is an apocalyptic number.

128551075 is a deficient number, since it is larger than the sum of its proper divisors (30852289).

128551075 is an equidigital number, since it uses as much as digits as its factorization.

128551075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142053 (or 5142048 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 128551075 is about 11338.0366466157. The cubic root of 128551075 is about 504.6906251344.

The spelling of 128551075 in words is "one hundred twenty-eight million, five hundred fifty-one thousand, seventy-five".