171363121 has 2 divisors, whose sum is σ = 171363122. Its totient is φ = 171363120.

The previous prime is 171363119. The next prime is 171363131. The reversal of 171363121 is 121363171.

171363121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165482496 + 5880625 = 12864^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 171363121 - 2¹ = 171363119 is a prime.

Together with 171363119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (171363131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85681560 + 85681561.

It is an arithmetic number, because the mean of its divisors is an integer number (85681561).

Almost surely, 2^171363121 is an apocalyptic number.

It is an amenable number.

171363121 is a deficient number, since it is larger than the sum of its proper divisors (1).

171363121 is an equidigital number, since it uses as much as digits as its factorization.

171363121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 25.

The square root of 171363121 is about 13090.5737460205. The cubic root of 171363121 is about 555.4425180525.

The spelling of 171363121 in words is "one hundred seventy-one million, three hundred sixty-three thousand, one hundred twenty-one".