55421822700 has 288 divisors, whose sum is σ = 183848857920. Its totient is φ = 14311987200.

The previous prime is 55421822623. The next prime is 55421822707. The reversal of 55421822700 is 722812455.

It is a happy number.

55421822700 is a `hidden beast` number, since 5 + 5 + 421 + 8 + 227 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (55421822707) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23275510 + ... + 23277890.

It is an arithmetic number, because the mean of its divisors is an integer number (638364090).

Almost surely, 2^55421822700 is an apocalyptic number.

55421822700 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 55421822700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91924428960).

55421822700 is an abundant number, since it is smaller than the sum of its proper divisors (128427035220).

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

55421822700 is a wasteful number, since it uses less digits than its factorization.

55421822700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674 (or 2661 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The spelling of 55421822700 in words is "fifty-five billion, four hundred twenty-one million, eight hundred twenty-two thousand, seven hundred".