55662216 has 64 divisors (see below), whose sum is σ = 148236480. Its totient is φ = 17356800.

The previous prime is 55662203. The next prime is 55662221. The reversal of 55662216 is 61226655.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 92316 + ... + 92916.

It is an arithmetic number, because the mean of its divisors is an integer number (2316195).

Almost surely, 2^55662216 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 55662216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74118240).

55662216 is an abundant number, since it is smaller than the sum of its proper divisors (92574264).

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

55662216 is a wasteful number, since it uses less digits than its factorization.

55662216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 850 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 55662216 is about 7460.7114942209. The cubic root of 55662216 is about 381.8154495372.

The spelling of 55662216 in words is "fifty-five million, six hundred sixty-two thousand, two hundred sixteen".