55500800 has 84 divisors (see below), whose sum is σ = 138141456. Its totient is φ = 22118400.

The previous prime is 55500799. The next prime is 55500803. The reversal of 55500800 is 800555.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204665 + ... + 204935.

Almost surely, 2^55500800 is an apocalyptic number.

55500800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55500800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69070728).

55500800 is an abundant number, since it is smaller than the sum of its proper divisors (82640656).

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

55500800 is an equidigital number, since it uses as much as digits as its factorization.

55500800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 55500800 is about 7449.8859051666. The cubic root of 55500800 is about 381.4460140487.

The spelling of 55500800 in words is "fifty-five million, five hundred thousand, eight hundred".