406171 has 2 divisors, whose sum is σ = 406172. Its totient is φ = 406170.

The previous prime is 406169. The next prime is 406177. The reversal of 406171 is 171604.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406171 - 2¹ = 406169 is a prime.

Together with 406169, it forms a pair of twin primes.

It is a Chen prime.

406171 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (406177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203085 + 203086.

It is an arithmetic number, because the mean of its divisors is an integer number (203086).

2⁴⁰⁶¹⁷¹ is an apocalyptic number.

406171 is a deficient number, since it is larger than the sum of its proper divisors (1).

406171 is an equidigital number, since it uses as much as digits as its factorization.

406171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 406171 is about 637.3154634873. The cubic root of 406171 is about 74.0576006361.

Adding to 406171 its reverse (171604), we get a palindrome (577775).

The spelling of 406171 in words is "four hundred six thousand, one hundred seventy-one".