55688916 has 24 divisors (see below), whose sum is σ = 130100544. Its totient is φ = 18540160.

The previous prime is 55688909. The next prime is 55688929. The reversal of 55688916 is 61988655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9436 + ... + 14156.

It is an arithmetic number, because the mean of its divisors is an integer number (5420856).

Almost surely, 2^55688916 is an apocalyptic number.

It is an amenable number.

55688916 is an abundant number, since it is smaller than the sum of its proper divisors (74411628).

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

55688916 is a wasteful number, since it uses less digits than its factorization.

55688916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711 (or 5709 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 55688916 is about 7462.5006532663. The cubic root of 55688916 is about 381.8764894050.

The spelling of 55688916 in words is "fifty-five million, six hundred eighty-eight thousand, nine hundred sixteen".