53140021530 has 16 divisors (see below), whose sum is σ = 127536051744. Its totient is φ = 14170672400.

The previous prime is 53140021469. The next prime is 53140021531. The reversal of 53140021530 is 3512004135.

It is a self number, because there is not a number n which added to its sum of digits gives 53140021530.

It is not an unprimeable number, because it can be changed into a prime (53140021531) 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, 885666996 + ... + 885667055.

It is an arithmetic number, because the mean of its divisors is an integer number (7971003234).

Almost surely, 2^53140021530 is an apocalyptic number.

53140021530 is an abundant number, since it is smaller than the sum of its proper divisors (74396030214).

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

53140021530 is a wasteful number, since it uses less digits than its factorization.

53140021530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771334061.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 53140021530 its reverse (3512004135), we get a palindrome (56652025665).

The spelling of 53140021530 in words is "fifty-three billion, one hundred forty million, twenty-one thousand, five hundred thirty".