54881136 has 60 divisors (see below), whose sum is σ = 154548888. Its totient is φ = 18179712.

The previous prime is 54881089. The next prime is 54881143. The reversal of 54881136 is 63118845.

54881136 is a `hidden beast` number, since 548 + 81 + 1 + 36 = 666.

54881136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 54881136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23811 + ... + 26013.

Almost surely, 2^54881136 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 54881136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77274444).

54881136 is an abundant number, since it is smaller than the sum of its proper divisors (99667752).

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

54881136 is a wasteful number, since it uses less digits than its factorization.

54881136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390 (or 2381 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 54881136 is about 7408.1803433772. The cubic root of 54881136 is about 380.0210883957.

The spelling of 54881136 in words is "fifty-four million, eight hundred eighty-one thousand, one hundred thirty-six".