55004455200 has 144 divisors (see below), whose sum is σ = 179617628736. Its totient is φ = 14620492800.

The previous prime is 55004455141. The next prime is 55004455201. The reversal of 55004455200 is 255440055.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (55004455201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 709554 + ... + 783246.

It is an arithmetic number, because the mean of its divisors is an integer number (1247344644).

Almost surely, 2^55004455200 is an apocalyptic number.

55004455200 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 55004455200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89808814368).

55004455200 is an abundant number, since it is smaller than the sum of its proper divisors (124613173536).

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

55004455200 is a wasteful number, since it uses less digits than its factorization.

55004455200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74027 (or 74014 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

Adding to 55004455200 its reverse (255440055), we get a palindrome (55259895255).

The spelling of 55004455200 in words is "fifty-five billion, four million, four hundred fifty-five thousand, two hundred".