55868216 has 16 divisors (see below), whose sum is σ = 104834400. Its totient is φ = 27912384.

The previous prime is 55868191. The next prime is 55868243. The reversal of 55868216 is 61286855.

It is a congruent number.

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, 15041 + ... + 18383.

It is an arithmetic number, because the mean of its divisors is an integer number (6552150).

Almost surely, 2^55868216 is an apocalyptic number.

It is an amenable number.

55868216 is a deficient number, since it is larger than the sum of its proper divisors (48966184).

55868216 is a wasteful number, since it uses less digits than its factorization.

55868216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438 (or 5434 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 55868216 is about 7474.5043982862. The cubic root of 55868216 is about 382.2858892551.

The spelling of 55868216 in words is "fifty-five million, eight hundred sixty-eight thousand, two hundred sixteen".