171187252 has 12 divisors (see below), whose sum is σ = 312602976. Its totient is φ = 81872120.

The previous prime is 171187243. The next prime is 171187253. The reversal of 171187252 is 252781171.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171187253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930274 + ... + 930457.

It is an arithmetic number, because the mean of its divisors is an integer number (26050248).

Almost surely, 2^171187252 is an apocalyptic number.

It is an amenable number.

171187252 is a deficient number, since it is larger than the sum of its proper divisors (141415724).

171187252 is a wasteful number, since it uses less digits than its factorization.

171187252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860758 (or 1860756 counting only the distinct ones).

The product of its digits is 7840, while the sum is 34.

The square root of 171187252 is about 13083.8546308036. The cubic root of 171187252 is about 555.2524371751.

The spelling of 171187252 in words is "one hundred seventy-one million, one hundred eighty-seven thousand, two hundred fifty-two".