52021841721 has 8 divisors (see below), whose sum is σ = 69375225504. Its totient is φ = 34674842880.

The previous prime is 52021841701. The next prime is 52021841723. The reversal of 52021841721 is 12714812025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52021841721 - 2⁶ = 52021841657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52021841723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577191 + ... + 1609836.

It is an arithmetic number, because the mean of its divisors is an integer number (8671903188).

Almost surely, 2^52021841721 is an apocalyptic number.

It is an amenable number.

52021841721 is a deficient number, since it is larger than the sum of its proper divisors (17353383783).

52021841721 is a wasteful number, since it uses less digits than its factorization.

52021841721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192471.

The product of its (nonzero) digits is 8960, while the sum is 33.

The spelling of 52021841721 in words is "fifty-two billion, twenty-one million, eight hundred forty-one thousand, seven hundred twenty-one".