55572171200 has 336 divisors, whose sum is σ = 171084508224. Its totient is φ = 17296588800.

The previous prime is 55572171163. The next prime is 55572171253. The reversal of 55572171200 is 217127555.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8878472 + ... + 8884728.

It is an arithmetic number, because the mean of its divisors is an integer number (509180084).

Almost surely, 2^55572171200 is an apocalyptic number.

55572171200 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 55572171200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85542254112).

55572171200 is an abundant number, since it is smaller than the sum of its proper divisors (115512337024).

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

55572171200 is a wasteful number, since it uses less digits than its factorization.

55572171200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360 (or 6345 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 35.

Adding to 55572171200 its reverse (217127555), we get a palindrome (55789298755).

The spelling of 55572171200 in words is "fifty-five billion, five hundred seventy-two million, one hundred seventy-one thousand, two hundred".