52444240 has 40 divisors (see below), whose sum is σ = 122436360. Its totient is φ = 20891136.

The previous prime is 52444211. The next prime is 52444243. The reversal of 52444240 is 4244425.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5494336 + 46949904 = 2344^2 + 6852^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52444243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20302 + ... + 22738.

It is an arithmetic number, because the mean of its divisors is an integer number (3060909).

Almost surely, 2^52444240 is an apocalyptic number.

It is an amenable number.

52444240 is an abundant number, since it is smaller than the sum of its proper divisors (69992120).

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

52444240 is a wasteful number, since it uses less digits than its factorization.

52444240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719 (or 2713 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 52444240 is about 7241.8395453089. The cubic root of 52444240 is about 374.3110074727.

Adding to 52444240 its reverse (4244425), we get a palindrome (56688665).

The spelling of 52444240 in words is "fifty-two million, four hundred forty-four thousand, two hundred forty".