145171 has 6 divisors (see below), whose sum is σ = 157380. Its totient is φ = 133848.

The previous prime is 145139. The next prime is 145177. The reversal of 145171 is 171541.

145171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145171 - 2⁵ = 145139 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (145177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 261 + ... + 598.

It is an arithmetic number, because the mean of its divisors is an integer number (26230).

2¹⁴⁵¹⁷¹ is an apocalyptic number.

145171 is a deficient number, since it is larger than the sum of its proper divisors (12209).

145171 is an equidigital number, since it uses as much as digits as its factorization.

145171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 872 counting only the distinct ones).

The product of its digits is 140, while the sum is 19.

The square root of 145171 is about 381.0131231336. The cubic root of 145171 is about 52.5565226469.

The spelling of 145171 in words is "one hundred forty-five thousand, one hundred seventy-one".