55636128 has 36 divisors (see below), whose sum is σ = 158216058. Its totient is φ = 18545280.

The previous prime is 55636127. The next prime is 55636129. The reversal of 55636128 is 82163655.

55636128 is a `hidden beast` number, since 5 + 5 + 636 + 12 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (55636127) and next prime (55636129).

It can be written as a sum of positive squares in only one way, i.e., 39087504 + 16548624 = 6252^2 + 4068^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55636092 and 55636101.

It is not an unprimeable number, because it can be changed into a prime (55636127) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96303 + ... + 96878.

Almost surely, 2^55636128 is an apocalyptic number.

It is an amenable number.

55636128 is an abundant number, since it is smaller than the sum of its proper divisors (102579930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55636128 is a wasteful number, since it uses less digits than its factorization.

55636128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193197 (or 193186 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 55636128 is about 7458.9629305956. The cubic root of 55636128 is about 381.7557899289.

The spelling of 55636128 in words is "fifty-five million, six hundred thirty-six thousand, one hundred twenty-eight".