55318416 has 80 divisors (see below), whose sum is σ = 147323904. Its totient is φ = 17880192.

The previous prime is 55318411. The next prime is 55318423. The reversal of 55318416 is 61481355.

It is not an unprimeable number, because it can be changed into a prime (55318411) 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 15 ways as a sum of consecutive naturals, for example, 331165 + ... + 331331.

Almost surely, 2^55318416 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 55318416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73661952).

55318416 is an abundant number, since it is smaller than the sum of its proper divisors (92005488).

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

55318416 is a wasteful number, since it uses less digits than its factorization.

55318416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 342 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 55318416 is about 7437.6351080165. The cubic root of 55318416 is about 381.0277258155.

The spelling of 55318416 in words is "fifty-five million, three hundred eighteen thousand, four hundred sixteen".