55507200000 has 864 divisors, whose sum is σ = 218812557600. Its totient is φ = 12472320000.

The previous prime is 55507199939. The next prime is 55507200113. The reversal of 55507200000 is 270555.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 940799971 + ... + 940800029.

It is an arithmetic number, because the mean of its divisors is an integer number (253255275).

Almost surely, 2^55507200000 is an apocalyptic number.

55507200000 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 55507200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109406278800).

55507200000 is an abundant number, since it is smaller than the sum of its proper divisors (163305357600).

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

55507200000 is an frugal number, since it uses more digits than its factorization.

55507200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 24.

Adding to 55507200000 its reverse (270555), we get a palindrome (55507470555).

The spelling of 55507200000 in words is "fifty-five billion, five hundred seven million, two hundred thousand".