171254513 has 2 divisors, whose sum is σ = 171254514. Its totient is φ = 171254512.

The previous prime is 171254477. The next prime is 171254557. The reversal of 171254513 is 315452171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136585969 + 34668544 = 11687^2 + 5888^2 .

It is a cyclic number.

It is not a de Polignac number, because 171254513 - 2⁶ = 171254449 is a prime.

It is not a weakly prime, because it can be changed into another prime (171251513) 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, 85627256 + 85627257.

It is an arithmetic number, because the mean of its divisors is an integer number (85627257).

Almost surely, 2^171254513 is an apocalyptic number.

It is an amenable number.

171254513 is a deficient number, since it is larger than the sum of its proper divisors (1).

171254513 is an equidigital number, since it uses as much as digits as its factorization.

171254513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 171254513 is about 13086.4247600328. The cubic root of 171254513 is about 555.3251488665.

The spelling of 171254513 in words is "one hundred seventy-one million, two hundred fifty-four thousand, five hundred thirteen".