128755523 has 24 divisors (see below), whose sum is σ = 146034000. Its totient is φ = 113353344.

The previous prime is 128755489. The next prime is 128755531. The reversal of 128755523 is 325557821.

It is not a de Polignac number, because 128755523 - 2¹⁶ = 128689987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128755553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 368753 + ... + 369101.

It is an arithmetic number, because the mean of its divisors is an integer number (6084750).

Almost surely, 2^128755523 is an apocalyptic number.

128755523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128755523 is a deficient number, since it is larger than the sum of its proper divisors (17278477).

128755523 is a wasteful number, since it uses less digits than its factorization.

128755523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 458 counting only the distinct ones).

The product of its digits is 84000, while the sum is 38.

The square root of 128755523 is about 11347.0490877585. The cubic root of 128755523 is about 504.9580372282.

The spelling of 128755523 in words is "one hundred twenty-eight million, seven hundred fifty-five thousand, five hundred twenty-three".