52287947389 has 4 divisors (see below), whose sum is σ = 55039944640. Its totient is φ = 49535950140.

The previous prime is 52287947377. The next prime is 52287947419. The reversal of 52287947389 is 98374978225.

It is a happy number.

52287947389 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52287947389 - 2¹¹ = 52287945341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52287947389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52287947359) 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, 1375998597 + ... + 1375998634.

It is an arithmetic number, because the mean of its divisors is an integer number (13759986160).

Almost surely, 2^52287947389 is an apocalyptic number.

It is an amenable number.

52287947389 is a deficient number, since it is larger than the sum of its proper divisors (2751997251).

52287947389 is a wasteful number, since it uses less digits than its factorization.

52287947389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751997250.

The product of its digits is 60963840, while the sum is 64.

The spelling of 52287947389 in words is "fifty-two billion, two hundred eighty-seven million, nine hundred forty-seven thousand, three hundred eighty-nine".