55216608 has 24 divisors (see below), whose sum is σ = 144943848. Its totient is φ = 18405504.

The previous prime is 55216597. The next prime is 55216633. The reversal of 55216608 is 80661255.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 287491 + ... + 287682.

It is an arithmetic number, because the mean of its divisors is an integer number (6039327).

Almost surely, 2^55216608 is an apocalyptic number.

It is an amenable number.

55216608 is an abundant number, since it is smaller than the sum of its proper divisors (89727240).

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

55216608 is a wasteful number, since it uses less digits than its factorization.

55216608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575186 (or 575178 counting only the distinct ones).

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

The square root of 55216608 is about 7430.7878451750. The cubic root of 55216608 is about 380.7938344928.

The spelling of 55216608 in words is "fifty-five million, two hundred sixteen thousand, six hundred eight".