245171 has 2 divisors, whose sum is σ = 245172. Its totient is φ = 245170.

The previous prime is 245149. The next prime is 245173. The reversal of 245171 is 171542.

245171 is nontrivially palindromic in base 16.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245171 - 2⁶ = 245107 is a prime.

Together with 245173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122585 + 122586.

It is an arithmetic number, because the mean of its divisors is an integer number (122586).

2²⁴⁵¹⁷¹ is an apocalyptic number.

245171 is a deficient number, since it is larger than the sum of its proper divisors (1).

245171 is an equidigital number, since it uses as much as digits as its factorization.

245171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 280, while the sum is 20.

The square root of 245171 is about 495.1474527855. The cubic root of 245171 is about 62.5878019287.

The spelling of 245171 in words is "two hundred forty-five thousand, one hundred seventy-one".