172427 has 2 divisors, whose sum is σ = 172428. Its totient is φ = 172426.

The previous prime is 172423. The next prime is 172433. The reversal of 172427 is 724271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172427 - 2² = 172423 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 172427.

It is not a weakly prime, because it can be changed into another prime (172421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86213 + 86214.

It is an arithmetic number, because the mean of its divisors is an integer number (86214).

2¹⁷²⁴²⁷ is an apocalyptic number.

172427 is a deficient number, since it is larger than the sum of its proper divisors (1).

172427 is an equidigital number, since it uses as much as digits as its factorization.

172427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 23.

The square root of 172427 is about 415.2433021736. The cubic root of 172427 is about 55.6589604513.

Adding to 172427 its reverse (724271), we get a palindrome (896698).

The spelling of 172427 in words is "one hundred seventy-two thousand, four hundred twenty-seven", and thus it is an iban number.