171058493 has 2 divisors, whose sum is σ = 171058494. Its totient is φ = 171058492.

The previous prime is 171058453. The next prime is 171058583. The reversal of 171058493 is 394850171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142038724 + 29019769 = 11918^2 + 5387^2 .

It is a cyclic number.

It is not a de Polignac number, because 171058493 - 2²⁴ = 154281277 is a prime.

It is a super-2 number, since 2×171058493² = 58522016054862098, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171058453) 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, 85529246 + 85529247.

It is an arithmetic number, because the mean of its divisors is an integer number (85529247).

Almost surely, 2^171058493 is an apocalyptic number.

It is an amenable number.

171058493 is a deficient number, since it is larger than the sum of its proper divisors (1).

171058493 is an equidigital number, since it uses as much as digits as its factorization.

171058493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 171058493 is about 13078.9331751485. The cubic root of 171058493 is about 555.1131906678.

The spelling of 171058493 in words is "one hundred seventy-one million, fifty-eight thousand, four hundred ninety-three".