53221344000 has 576 divisors, whose sum is σ = 195144768000. Its totient is φ = 12748800000.

The previous prime is 53221343993. The next prime is 53221344031. The reversal of 53221344000 is 44312235.

It is a super-2 number, since 2×53221344000² (a number of 22 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 106655751 + ... + 106656249.

It is an arithmetic number, because the mean of its divisors is an integer number (338793000).

Almost surely, 2^53221344000 is an apocalyptic number.

53221344000 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 53221344000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97572384000).

53221344000 is an abundant number, since it is smaller than the sum of its proper divisors (141923424000).

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

53221344000 is a wasteful number, since it uses less digits than its factorization.

53221344000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 53221344000 its reverse (44312235), we get a palindrome (53265656235).

The spelling of 53221344000 in words is "fifty-three billion, two hundred twenty-one million, three hundred forty-four thousand".