53222463440 has 40 divisors (see below), whose sum is σ = 128009206440. Its totient is φ = 20554881536.

The previous prime is 53222463319. The next prime is 53222463449. The reversal of 53222463440 is 4436422235.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9065324944 + 44157138496 = 95212^2 + 210136^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×53222463440² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53222463440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53222463449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11468039 + ... + 11472678.

It is an arithmetic number, because the mean of its divisors is an integer number (3200230161).

Almost surely, 2^53222463440 is an apocalyptic number.

It is an amenable number.

53222463440 is an abundant number, since it is smaller than the sum of its proper divisors (74786743000).

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

53222463440 is a wasteful number, since it uses less digits than its factorization.

53222463440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22940759 (or 22940753 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 53222463440 its reverse (4436422235), we get a palindrome (57658885675).

The spelling of 53222463440 in words is "fifty-three billion, two hundred twenty-two million, four hundred sixty-three thousand, four hundred forty".