52171685 has 8 divisors (see below), whose sum is σ = 64062240. Its totient is φ = 40766544.

The previous prime is 52171681. The next prime is 52171687. The reversal of 52171685 is 58617125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52171685 - 2² = 52171681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52171681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121115 + ... + 121544.

It is an arithmetic number, because the mean of its divisors is an integer number (8007780).

Almost surely, 2^52171685 is an apocalyptic number.

It is an amenable number.

52171685 is a deficient number, since it is larger than the sum of its proper divisors (11890555).

52171685 is a wasteful number, since it uses less digits than its factorization.

52171685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242707.

The product of its digits is 16800, while the sum is 35.

The square root of 52171685 is about 7222.9969541735. The cubic root of 52171685 is about 373.6614440290.

The spelling of 52171685 in words is "fifty-two million, one hundred seventy-one thousand, six hundred eighty-five".