52381287247 has 12 divisors (see below), whose sum is σ = 56386734768. Its totient is φ = 48491779200.

The previous prime is 52381287199. The next prime is 52381287271. The reversal of 52381287247 is 74278218325.

It is not a de Polignac number, because 52381287247 - 2¹¹ = 52381285199 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 52381287247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52381287347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350779 + ... + 477292.

It is an arithmetic number, because the mean of its divisors is an integer number (4698894564).

Almost surely, 2^52381287247 is an apocalyptic number.

52381287247 is a deficient number, since it is larger than the sum of its proper divisors (4005447521).

52381287247 is an equidigital number, since it uses as much as digits as its factorization.

52381287247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828210 (or 828149 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 49.

The spelling of 52381287247 in words is "fifty-two billion, three hundred eighty-one million, two hundred eighty-seven thousand, two hundred forty-seven".