52444440 has 48 divisors (see below), whose sum is σ = 170445600. Its totient is φ = 13985088.

The previous prime is 52444423. The next prime is 52444459. The reversal of 52444440 is 4444425.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72480 + ... + 73199.

It is an arithmetic number, because the mean of its divisors is an integer number (3550950).

Almost surely, 2^52444440 is an apocalyptic number.

It is an amenable number.

52444440 is an abundant number, since it is smaller than the sum of its proper divisors (118001160).

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

52444440 is a wasteful number, since it uses less digits than its factorization.

52444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145696 (or 145689 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 52444440 is about 7241.8533539419. The cubic root of 52444440 is about 374.3114832930.

Adding to 52444440 its reverse (4444425), we get a palindrome (56888865).

The spelling of 52444440 in words is "fifty-two million, four hundred forty-four thousand, four hundred forty".