52105313144221 has 4 divisors (see below), whose sum is σ = 52105472716032. Its totient is φ = 52105153572412.

The previous prime is 52105313144207. The next prime is 52105313144239. The reversal of 52105313144221 is 12244131350125.

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 a de Polignac number, because none of the positive numbers 2^k-52105313144221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52105313144201) 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, 79295101 + ... + 79949506.

It is an arithmetic number, because the mean of its divisors is an integer number (13026368179008).

Almost surely, 2^{52105313144221} is an apocalyptic number.

It is an amenable number.

52105313144221 is a deficient number, since it is larger than the sum of its proper divisors (159571811).

52105313144221 is a wasteful number, since it uses less digits than its factorization.

52105313144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159571810.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 52105313144221 its reverse (12244131350125), we get a palindrome (64349444494346).

The spelling of 52105313144221 in words is "fifty-two trillion, one hundred five billion, three hundred thirteen million, one hundred forty-four thousand, two hundred twenty-one".