56555500 has 24 divisors (see below), whose sum is σ = 123518304. Its totient is φ = 22622000.

The previous prime is 56555491. The next prime is 56555503. The reversal of 56555500 is 555565.

56555500 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

56555500 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (56555503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56056 + ... + 57055.

It is an arithmetic number, because the mean of its divisors is an integer number (5146596).

Almost surely, 2^56555500 is an apocalyptic number.

56555500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56555500 is an abundant number, since it is smaller than the sum of its proper divisors (66962804).

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

56555500 is a wasteful number, since it uses less digits than its factorization.

56555500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113130 (or 113118 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 56555500 is about 7520.3390880997. The cubic root of 56555500 is about 383.8471161507.

It can be divided in two parts, 565 and 55500, that added together give a palindrome (56065).

The spelling of 56555500 in words is "fifty-six million, five hundred fifty-five thousand, five hundred".