52506775808857 has 4 divisors (see below), whose sum is σ = 52506870123136. Its totient is φ = 52506681494580.

The previous prime is 52506775808779. The next prime is 52506775808863. The reversal of 52506775808857 is 75880857760525.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52506775808857 is a prime.

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 52506775808857.

It is not an unprimeable number, because it can be changed into a prime (52506775818857) 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, 46317069 + ... + 47437162.

It is an arithmetic number, because the mean of its divisors is an integer number (13126717530784).

Almost surely, 2^{52506775808857} is an apocalyptic number.

It is an amenable number.

52506775808857 is a deficient number, since it is larger than the sum of its proper divisors (94314279).

52506775808857 is an equidigital number, since it uses as much as digits as its factorization.

52506775808857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94314278.

The product of its (nonzero) digits is 1317120000, while the sum is 73.

The spelling of 52506775808857 in words is "fifty-two trillion, five hundred six billion, seven hundred seventy-five million, eight hundred eight thousand, eight hundred fifty-seven".