55560000 has 140 divisors (see below), whose sum is σ = 184091072. Its totient is φ = 14784000.

The previous prime is 55559993. The next prime is 55560007. The reversal of 55560000 is 6555.

55560000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55559993) and next prime (55560007).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55560007) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 119769 + ... + 120231.

Almost surely, 2^55560000 is an apocalyptic number.

55560000 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 55560000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92045536).

55560000 is an abundant number, since it is smaller than the sum of its proper divisors (128531072).

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

55560000 is an equidigital number, since it uses as much as digits as its factorization.

55560000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 55560000 is about 7453.8580614337. The cubic root of 55560000 is about 381.5815891508.

Adding to 55560000 its reverse (6555), we get a palindrome (55566555).

The spelling of 55560000 in words is "fifty-five million, five hundred sixty thousand".