128755201 has 16 divisors (see below), whose sum is σ = 135134208. Its totient is φ = 122572800.

The previous prime is 128755199. The next prime is 128755217. The reversal of 128755201 is 102557821.

It is a cyclic number.

It is not a de Polignac number, because 128755201 - 2¹ = 128755199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128755261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500865 + ... + 501121.

It is an arithmetic number, because the mean of its divisors is an integer number (8445888).

Almost surely, 2^128755201 is an apocalyptic number.

It is an amenable number.

128755201 is a deficient number, since it is larger than the sum of its proper divisors (6379007).

128755201 is a wasteful number, since it uses less digits than its factorization.

128755201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 128755201 is about 11347.0348990386. The cubic root of 128755201 is about 504.9576162841.

The spelling of 128755201 in words is "one hundred twenty-eight million, seven hundred fifty-five thousand, two hundred one".