52447515121 has 4 divisors (see below), whose sum is σ = 53437090932. Its totient is φ = 51457939312.

The previous prime is 52447515097. The next prime is 52447515221. The reversal of 52447515121 is 12151574425.

It is a happy number.

52447515121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15960784896 + 36486730225 = 126336^2 + 191015^2 .

It is a cyclic number.

It is not a de Polignac number, because 52447515121 - 2¹¹ = 52447513073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52447515221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494787826 + ... + 494787931.

It is an arithmetic number, because the mean of its divisors is an integer number (13359272733).

Almost surely, 2^52447515121 is an apocalyptic number.

It is an amenable number.

52447515121 is a deficient number, since it is larger than the sum of its proper divisors (989575811).

52447515121 is an equidigital number, since it uses as much as digits as its factorization.

52447515121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989575810.

The product of its digits is 56000, while the sum is 37.

The spelling of 52447515121 in words is "fifty-two billion, four hundred forty-seven million, five hundred fifteen thousand, one hundred twenty-one".