171868852 has 6 divisors (see below), whose sum is σ = 300770498. Its totient is φ = 85934424.

The previous prime is 171868817. The next prime is 171868859. The reversal of 171868852 is 258868171.

It can be written as a sum of positive squares in only one way, i.e., 125574436 + 46294416 = 11206^2 + 6804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171868859) 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 as a sum of consecutive naturals, namely, 21483603 + ... + 21483610.

Almost surely, 2^171868852 is an apocalyptic number.

It is an amenable number.

171868852 is a deficient number, since it is larger than the sum of its proper divisors (128901646).

171868852 is a wasteful number, since it uses less digits than its factorization.

171868852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42967217 (or 42967215 counting only the distinct ones).

The product of its digits is 215040, while the sum is 46.

The square root of 171868852 is about 13109.8761245101. The cubic root of 171868852 is about 555.9883932156.

The spelling of 171868852 in words is "one hundred seventy-one million, eight hundred sixty-eight thousand, eight hundred fifty-two".