52471802881 has 4 divisors (see below), whose sum is σ = 52472418372. Its totient is φ = 52471187392.

The previous prime is 52471802849. The next prime is 52471802939. The reversal of 52471802881 is 18820817425.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25638414400 + 26833388481 = 160120^2 + 163809^2 .

It is a cyclic number.

It is not a de Polignac number, because 52471802881 - 2⁵ = 52471802849 is a prime.

It is a super-2 number, since 2×52471802881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52471802281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154396 + ... + 358861.

It is an arithmetic number, because the mean of its divisors is an integer number (13118104593).

Almost surely, 2^52471802881 is an apocalyptic number.

It is an amenable number.

52471802881 is a deficient number, since it is larger than the sum of its proper divisors (615491).

52471802881 is a wasteful number, since it uses less digits than its factorization.

52471802881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615490.

The product of its (nonzero) digits is 286720, while the sum is 46.

The spelling of 52471802881 in words is "fifty-two billion, four hundred seventy-one million, eight hundred two thousand, eight hundred eighty-one".