52553444021 has 16 divisors (see below), whose sum is σ = 57170675520. Its totient is φ = 48020688000.

The previous prime is 52553444017. The next prime is 52553444039. The reversal of 52553444021 is 12044435525.

It is a cyclic number.

It is not a de Polignac number, because 52553444021 - 2² = 52553444017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52553444011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482465 + ... + 581273.

It is an arithmetic number, because the mean of its divisors is an integer number (3573167220).

Almost surely, 2^52553444021 is an apocalyptic number.

It is an amenable number.

52553444021 is a deficient number, since it is larger than the sum of its proper divisors (4617231499).

52553444021 is a wasteful number, since it uses less digits than its factorization.

52553444021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99236.

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

Adding to 52553444021 its reverse (12044435525), we get a palindrome (64597879546).

The spelling of 52553444021 in words is "fifty-two billion, five hundred fifty-three million, four hundred forty-four thousand, twenty-one".