52806471853 has 4 divisors (see below), whose sum is σ = 52856243388. Its totient is φ = 52756700320.

The previous prime is 52806471847. The next prime is 52806471911. The reversal of 52806471853 is 35817460825.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23715076009 + 29091395844 = 153997^2 + 170562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52806471853 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52806471797 and 52806471806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52806471953) 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, 24884176 + ... + 24886297.

It is an arithmetic number, because the mean of its divisors is an integer number (13214060847).

Almost surely, 2^52806471853 is an apocalyptic number.

It is an amenable number.

52806471853 is a deficient number, since it is larger than the sum of its proper divisors (49771535).

52806471853 is a wasteful number, since it uses less digits than its factorization.

52806471853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49771534.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 52806471853 in words is "fifty-two billion, eight hundred six million, four hundred seventy-one thousand, eight hundred fifty-three".