52542021331 has 8 divisors (see below), whose sum is σ = 54914166720. Its totient is φ = 50207232768.

The previous prime is 52542021313. The next prime is 52542021373. The reversal of 52542021331 is 13312024525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52542021331 - 2²¹ = 52539924179 is a prime.

It is a super-2 number, since 2×52542021331² (a number of 22 digits) contains 22 as substring.

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 52542021331.

It is not an unprimeable number, because it can be changed into a prime (52542024331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9336331 + ... + 9341956.

It is an arithmetic number, because the mean of its divisors is an integer number (6864270840).

Almost surely, 2^52542021331 is an apocalyptic number.

52542021331 is a deficient number, since it is larger than the sum of its proper divisors (2372145389).

52542021331 is a wasteful number, since it uses less digits than its factorization.

52542021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18678413.

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

Adding to 52542021331 its reverse (13312024525), we get a palindrome (65854045856).

The spelling of 52542021331 in words is "fifty-two billion, five hundred forty-two million, twenty-one thousand, three hundred thirty-one".