52885981481 has 4 divisors (see below), whose sum is σ = 52886515200. Its totient is φ = 52885447764.

The previous prime is 52885981441. The next prime is 52885981529. The reversal of 52885981481 is 18418958825.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52885981481 is a prime.

It is a super-2 number, since 2×52885981481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52885981481.

It is not an unprimeable number, because it can be changed into a prime (52885981441) 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, 69641 + ... + 332598.

It is an arithmetic number, because the mean of its divisors is an integer number (13221628800).

Almost surely, 2^52885981481 is an apocalyptic number.

It is an amenable number.

52885981481 is a deficient number, since it is larger than the sum of its proper divisors (533719).

52885981481 is a wasteful number, since it uses less digits than its factorization.

52885981481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533718.

The product of its digits is 7372800, while the sum is 59.

The spelling of 52885981481 in words is "fifty-two billion, eight hundred eighty-five million, nine hundred eighty-one thousand, four hundred eighty-one".