52444140 has 192 divisors, whose sum is σ = 179988480. Its totient is φ = 11151360.

The previous prime is 52444129. The next prime is 52444141. The reversal of 52444140 is 4144425.

It is a happy number.

52444140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 52444140.

It is not an unprimeable number, because it can be changed into a prime (52444141) by changing a digit.

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, 589216 + ... + 589304.

It is an arithmetic number, because the mean of its divisors is an integer number (937440).

Almost surely, 2^52444140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52444140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89994240).

52444140 is an abundant number, since it is smaller than the sum of its proper divisors (127544340).

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

52444140 is a wasteful number, since it uses less digits than its factorization.

52444140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 52444140 is about 7241.8326409825. The cubic root of 52444140 is about 374.3107695621.

Adding to 52444140 its reverse (4144425), we get a palindrome (56588565).

The spelling of 52444140 in words is "fifty-two million, four hundred forty-four thousand, one hundred forty".