55455500 has 48 divisors (see below), whose sum is σ = 121945824. Its totient is φ = 22030400.

The previous prime is 55455487. The next prime is 55455539. The reversal of 55455500 is 555455.

55455500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98219 + ... + 98781.

It is an arithmetic number, because the mean of its divisors is an integer number (2540538).

Almost surely, 2^55455500 is an apocalyptic number.

55455500 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 55455500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60972912).

55455500 is an abundant number, since it is smaller than the sum of its proper divisors (66490324).

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

55455500 is a wasteful number, since it uses less digits than its factorization.

55455500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 55455500 is about 7446.8449695156. The cubic root of 55455500 is about 381.3422064893.

It can be divided in two parts, 55455 and 500, that added together give a palindrome (55955).

The spelling of 55455500 in words is "fifty-five million, four hundred fifty-five thousand, five hundred".