52171277717 has 4 divisors (see below), whose sum is σ = 56184452940. Its totient is φ = 48158102496.

The previous prime is 52171277663. The next prime is 52171277779. The reversal of 52171277717 is 71777217125.

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 26747294116 + 25423983601 = 163546^2 + 159449^2 .

It is a cyclic number.

It is not a de Polignac number, because 52171277717 - 2¹⁴ = 52171261333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52171277797) 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, 2006587592 + ... + 2006587617.

It is an arithmetic number, because the mean of its divisors is an integer number (14046113235).

Almost surely, 2^52171277717 is an apocalyptic number.

It is an amenable number.

52171277717 is a deficient number, since it is larger than the sum of its proper divisors (4013175223).

52171277717 is a wasteful number, since it uses less digits than its factorization.

52171277717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013175222.

The product of its digits is 336140, while the sum is 47.

The spelling of 52171277717 in words is "fifty-two billion, one hundred seventy-one million, two hundred seventy-seven thousand, seven hundred seventeen".