172151 has 4 divisors (see below), whose sum is σ = 196752. Its totient is φ = 147552.

The previous prime is 172147. The next prime is 172153. The reversal of 172151 is 151271.

172151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151271 = 23 ⋅6577.

It is a cyclic number.

It is not a de Polignac number, because 172151 - 2² = 172147 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 (172153) 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, 12290 + ... + 12303.

It is an arithmetic number, because the mean of its divisors is an integer number (49188).

2¹⁷²¹⁵¹ is an apocalyptic number.

172151 is a deficient number, since it is larger than the sum of its proper divisors (24601).

172151 is an equidigital number, since it uses as much as digits as its factorization.

172151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24600.

The product of its digits is 70, while the sum is 17.

The square root of 172151 is about 414.9108337944. The cubic root of 172151 is about 55.6292472454.

It can be divided in two parts, 172 and 151, that added together give a palindrome (323).

The spelling of 172151 in words is "one hundred seventy-two thousand, one hundred fifty-one".