55228736 has 28 divisors (see below), whose sum is σ = 109837728. Its totient is φ = 27553152.

The previous prime is 55228721. The next prime is 55228739. The reversal of 55228736 is 63782255.

It is a self number, because there is not a number n which added to its sum of digits gives 55228736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55228739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45935 + ... + 47121.

It is an arithmetic number, because the mean of its divisors is an integer number (3922776).

Almost surely, 2^55228736 is an apocalyptic number.

It is an amenable number.

55228736 is a deficient number, since it is larger than the sum of its proper divisors (54608992).

55228736 is a wasteful number, since it uses less digits than its factorization.

55228736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926 (or 1916 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 55228736 is about 7431.6038645773. The cubic root of 55228736 is about 380.8217121532.

The spelling of 55228736 in words is "fifty-five million, two hundred twenty-eight thousand, seven hundred thirty-six".