172868271 has 4 divisors (see below), whose sum is σ = 230491032. Its totient is φ = 115245512.

The previous prime is 172868263. The next prime is 172868281.

172868271 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172868271 - 2³ = 172868263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172868261) 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, 28811376 + ... + 28811381.

It is an arithmetic number, because the mean of its divisors is an integer number (57622758).

Almost surely, 2^172868271 is an apocalyptic number.

172868271 is a deficient number, since it is larger than the sum of its proper divisors (57622761).

172868271 is an equidigital number, since it uses as much as digits as its factorization.

172868271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57622760.

The product of its digits is 75264, while the sum is 42.

The square root of 172868271 is about 13147.9378991536. The cubic root of 172868271 is about 557.0640035956.

The spelling of 172868271 in words is "one hundred seventy-two million, eight hundred sixty-eight thousand, two hundred seventy-one".