52171112449 has 4 divisors (see below), whose sum is σ = 52193026260. Its totient is φ = 52149198640.

The previous prime is 52171112423. The next prime is 52171112509. The reversal of 52171112449 is 94421117125.

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 4475610000 + 47695502449 = 66900^2 + 218393^2 .

It is a cyclic number.

It is not a de Polignac number, because 52171112449 - 2²⁵ = 52137558017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52171812449) 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, 10953334 + ... + 10958095.

It is an arithmetic number, because the mean of its divisors is an integer number (13048256565).

It is a Proth number, since it is equal to 199017 ⋅ 2¹⁸ + 1 and 199017 < 2¹⁸.

Almost surely, 2^52171112449 is an apocalyptic number.

It is an amenable number.

52171112449 is a deficient number, since it is larger than the sum of its proper divisors (21913811).

52171112449 is a wasteful number, since it uses less digits than its factorization.

52171112449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21913810.

The product of its digits is 20160, while the sum is 37.

The spelling of 52171112449 in words is "fifty-two billion, one hundred seventy-one million, one hundred twelve thousand, four hundred forty-nine".