128755055 has 16 divisors (see below), whose sum is σ = 181518624. Its totient is φ = 86436480.

The previous prime is 128755049. The next prime is 128755061. The reversal of 128755055 is 550557821.

It is an interprime number because it is at equal distance from previous prime (128755049) and next prime (128755061).

It is not a de Polignac number, because 128755055 - 2¹⁸ = 128492911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89324 + ... + 90753.

It is an arithmetic number, because the mean of its divisors is an integer number (11344914).

Almost surely, 2^128755055 is an apocalyptic number.

128755055 is a deficient number, since it is larger than the sum of its proper divisors (52763569).

128755055 is a wasteful number, since it uses less digits than its factorization.

128755055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180106.

The product of its (nonzero) digits is 70000, while the sum is 38.

The square root of 128755055 is about 11347.0284656380. The cubic root of 128755055 is about 504.9574254210.

The spelling of 128755055 in words is "one hundred twenty-eight million, seven hundred fifty-five thousand, fifty-five".