52343215021 has 12 divisors (see below), whose sum is σ = 55501103700. Its totient is φ = 49305589760.

The previous prime is 52343215013. The next prime is 52343215049. The reversal of 52343215021 is 12051234325.

It can be written as a sum of positive squares in 6 ways, for example, as 4762518121 + 47580696900 = 69011^2 + 218130^2 .

It is not a de Polignac number, because 52343215021 - 2³ = 52343215013 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 (52343215721) 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, 488116 + ... + 585613.

It is an arithmetic number, because the mean of its divisors is an integer number (4625091975).

Almost surely, 2^52343215021 is an apocalyptic number.

It is an amenable number.

52343215021 is a deficient number, since it is larger than the sum of its proper divisors (3157888679).

52343215021 is a wasteful number, since it uses less digits than its factorization.

52343215021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073840 (or 1073799 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 52343215021 its reverse (12051234325), we get a palindrome (64394449346).

The spelling of 52343215021 in words is "fifty-two billion, three hundred forty-three million, two hundred fifteen thousand, twenty-one".