52238121391 has 4 divisors (see below), whose sum is σ = 52250391000. Its totient is φ = 52225851784.

The previous prime is 52238121389. The next prime is 52238121401. The reversal of 52238121391 is 19312183225.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52238121391 - 2¹ = 52238121389 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 52238121391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52238121191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6128416 + ... + 6136933.

It is an arithmetic number, because the mean of its divisors is an integer number (13062597750).

Almost surely, 2^52238121391 is an apocalyptic number.

52238121391 is a deficient number, since it is larger than the sum of its proper divisors (12269609).

52238121391 is a wasteful number, since it uses less digits than its factorization.

52238121391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12269608.

The product of its digits is 25920, while the sum is 37.

The spelling of 52238121391 in words is "fifty-two billion, two hundred thirty-eight million, one hundred twenty-one thousand, three hundred ninety-one".