52542020321 has 12 divisors (see below), whose sum is σ = 61281598320. Its totient is φ = 44917173000.

The previous prime is 52542020273. The next prime is 52542020357. The reversal of 52542020321 is 12302024525.

It is a de Polignac number, because none of the positive numbers 2^k-52542020321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52542020381) 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, 1396055 + ... + 1433196.

It is an arithmetic number, because the mean of its divisors is an integer number (5106799860).

Almost surely, 2^52542020321 is an apocalyptic number.

It is an amenable number.

52542020321 is a deficient number, since it is larger than the sum of its proper divisors (8739577999).

52542020321 is a wasteful number, since it uses less digits than its factorization.

52542020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829644 (or 2829637 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 52542020321 its reverse (12302024525), we get a palindrome (64844044846).

The spelling of 52542020321 in words is "fifty-two billion, five hundred forty-two million, twenty thousand, three hundred twenty-one".