172387271 has 8 divisors (see below), whose sum is σ = 197099904. Its totient is φ = 147696120.

The previous prime is 172387261. The next prime is 172387273. The reversal of 172387271 is 172783271.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172387271 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 (172387273) 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, 19556 + ... + 26966.

It is an arithmetic number, because the mean of its divisors is an integer number (24637488).

Almost surely, 2^172387271 is an apocalyptic number.

172387271 is a deficient number, since it is larger than the sum of its proper divisors (24712633).

172387271 is an equidigital number, since it uses as much as digits as its factorization.

172387271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10741.

The product of its digits is 32928, while the sum is 38.

The square root of 172387271 is about 13129.6333155195. The cubic root of 172387271 is about 556.5468531905.

The spelling of 172387271 in words is "one hundred seventy-two million, three hundred eighty-seven thousand, two hundred seventy-one".