55136328 has 128 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 15724800.

The previous prime is 55136303. The next prime is 55136329. The reversal of 55136328 is 82363155.

It is not an unprimeable number, because it can be changed into a prime (55136329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420823 + ... + 420953.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^55136328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55136328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600).

55136328 is an abundant number, since it is smaller than the sum of its proper divisors (104530872).

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

55136328 is a wasteful number, since it uses less digits than its factorization.

55136328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 239 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 55136328 is about 7425.3840304728. The cubic root of 55136328 is about 380.6091982784.

The spelling of 55136328 in words is "fifty-five million, one hundred thirty-six thousand, three hundred twenty-eight".