55055808 has 112 divisors (see below), whose sum is σ = 163697920. Its totient is φ = 18144000.

The previous prime is 55055731. The next prime is 55055821. The reversal of 55055808 is 80855055.

It is a super-2 number, since 2×55055808² = 6062283989065728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260823 + ... + 261033.

Almost surely, 2^55055808 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 55055808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81848960).

55055808 is an abundant number, since it is smaller than the sum of its proper divisors (108642112).

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

55055808 is a wasteful number, since it uses less digits than its factorization.

55055808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

The square root of 55055808 is about 7419.9601077095. The cubic root of 55055808 is about 380.4238299713.

The spelling of 55055808 in words is "fifty-five million, fifty-five thousand, eight hundred eight".