52004425021 has 4 divisors (see below), whose sum is σ = 52540553212. Its totient is φ = 51468296832.

The previous prime is 52004425013. The next prime is 52004425079. The reversal of 52004425021 is 12052440025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38177252100 + 13827172921 = 195390^2 + 117589^2 .

It is a cyclic number.

It is not a de Polignac number, because 52004425021 - 2³ = 52004425013 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 (52004425091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268063950 + ... + 268064143.

It is an arithmetic number, because the mean of its divisors is an integer number (13135138303).

Almost surely, 2^52004425021 is an apocalyptic number.

It is an amenable number.

52004425021 is a deficient number, since it is larger than the sum of its proper divisors (536128191).

52004425021 is an equidigital number, since it uses as much as digits as its factorization.

52004425021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536128190.

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 52004425021 its reverse (12052440025), we get a palindrome (64056865046).

The spelling of 52004425021 in words is "fifty-two billion, four million, four hundred twenty-five thousand, twenty-one".