53440240532 has 24 divisors (see below), whose sum is σ = 106902406464. Its totient is φ = 22898261952.

The previous prime is 53440240531. The next prime is 53440240543. The reversal of 53440240532 is 23504204435.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53440240531) 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, 55058 + ... + 331529.

It is an arithmetic number, because the mean of its divisors is an integer number (4454266936).

Almost surely, 2^53440240532 is an apocalyptic number.

It is an amenable number.

53440240532 is an abundant number, since it is smaller than the sum of its proper divisors (53462165932).

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

53440240532 is a wasteful number, since it uses less digits than its factorization.

53440240532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391535 (or 391533 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 53440240532 its reverse (23504204435), we get a palindrome (76944444967).

The spelling of 53440240532 in words is "fifty-three billion, four hundred forty million, two hundred forty thousand, five hundred thirty-two".