172147 has 2 divisors, whose sum is σ = 172148. Its totient is φ = 172146.

The previous prime is 172127. The next prime is 172153. The reversal of 172147 is 741271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172147 - 2¹¹ = 170099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86073 + 86074.

It is an arithmetic number, because the mean of its divisors is an integer number (86074).

2¹⁷²¹⁴⁷ is an apocalyptic number.

172147 is a deficient number, since it is larger than the sum of its proper divisors (1).

172147 is an equidigital number, since it uses as much as digits as its factorization.

172147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 392, while the sum is 22.

The square root of 172147 is about 414.9060134536. The cubic root of 172147 is about 55.6288163859.

The spelling of 172147 in words is "one hundred seventy-two thousand, one hundred forty-seven", and thus it is an iban number.