53521425440 has 48 divisors (see below), whose sum is σ = 144507851712. Its totient is φ = 18350202624.

The previous prime is 53521425427. The next prime is 53521425449. The reversal of 53521425440 is 4452412535.

It is a super-2 number, since 2×53521425440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 53521425440.

It is not an unprimeable number, because it can be changed into a prime (53521425449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23892374 + ... + 23894613.

It is an arithmetic number, because the mean of its divisors is an integer number (3010580244).

Almost surely, 2^53521425440 is an apocalyptic number.

It is an amenable number.

53521425440 is an abundant number, since it is smaller than the sum of its proper divisors (90986426272).

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

53521425440 is a wasteful number, since it uses less digits than its factorization.

53521425440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47787009 (or 47787001 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 53521425440 its reverse (4452412535), we get a palindrome (57973837975).

The spelling of 53521425440 in words is "fifty-three billion, five hundred twenty-one million, four hundred twenty-five thousand, four hundred forty".