52542144440 has 32 divisors (see below), whose sum is σ = 118311090480. Its totient is φ = 21000632832.

The previous prime is 52542144383. The next prime is 52542144451. The reversal of 52542144440 is 4444124525.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 52542144440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454502 + ... + 558261.

Almost surely, 2^52542144440 is an apocalyptic number.

It is an amenable number.

52542144440 is an abundant number, since it is smaller than the sum of its proper divisors (65768946040).

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

52542144440 is a wasteful number, since it uses less digits than its factorization.

52542144440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014071 (or 1014067 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 52542144440 its reverse (4444124525), we get a palindrome (56986268965).

The spelling of 52542144440 in words is "fifty-two billion, five hundred forty-two million, one hundred forty-four thousand, four hundred forty".