55238816 has 24 divisors (see below), whose sum is σ = 108961524. Its totient is φ = 27566080.

The previous prime is 55238803. The next prime is 55238837. The reversal of 55238816 is 61883255.

It can be written as a sum of positive squares in 2 ways, for example, as 53290000 + 1948816 = 7300^2 + 1396^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55238816.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19166 + ... + 21858.

Almost surely, 2^55238816 is an apocalyptic number.

It is an amenable number.

55238816 is a deficient number, since it is larger than the sum of its proper divisors (53722708).

55238816 is a wasteful number, since it uses less digits than its factorization.

55238816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344 (or 3336 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 55238816 is about 7432.2820183306. The cubic root of 55238816 is about 380.8448791349.

The spelling of 55238816 in words is "fifty-five million, two hundred thirty-eight thousand, eight hundred sixteen".