171481 has 2 divisors, whose sum is σ = 171482. Its totient is φ = 171480.

The previous prime is 171473. The next prime is 171491. The reversal of 171481 is 184171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147456 + 24025 = 384^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 171481 - 2³ = 171473 is a prime.

It is a super-2 number, since 2×171481² = 58811466722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (171401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85740 + 85741.

It is an arithmetic number, because the mean of its divisors is an integer number (85741).

2¹⁷¹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

171481 is a deficient number, since it is larger than the sum of its proper divisors (1).

171481 is an equidigital number, since it uses as much as digits as its factorization.

171481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224, while the sum is 22.

The square root of 171481 is about 414.1026442804. The cubic root of 171481 is about 55.5569850003.

The spelling of 171481 in words is "one hundred seventy-one thousand, four hundred eighty-one".