55255031200 has 72 divisors (see below), whose sum is σ = 134997570540. Its totient is φ = 22084608000.

The previous prime is 55255031189. The next prime is 55255031257. The reversal of 55255031200 is 213055255.

It can be written as a sum of positive squares in 6 ways, for example, as 5588496 + 55249442704 = 2364^2 + 235052^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1014256 + ... + 1067344.

Almost surely, 2^55255031200 is an apocalyptic number.

55255031200 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 55255031200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67498785270).

55255031200 is an abundant number, since it is smaller than the sum of its proper divisors (79742539340).

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

55255031200 is a wasteful number, since it uses less digits than its factorization.

55255031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54410 (or 54397 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

Adding to 55255031200 its reverse (213055255), we get a palindrome (55468086455).

The spelling of 55255031200 in words is "fifty-five billion, two hundred fifty-five million, thirty-one thousand, two hundred".