171206449 has 2 divisors, whose sum is σ = 171206450. Its totient is φ = 171206448.

The previous prime is 171206429. The next prime is 171206471. The reversal of 171206449 is 944602171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136773025 + 34433424 = 11695^2 + 5868^2 .

It is a cyclic number.

It is not a de Polignac number, because 171206449 - 2¹¹ = 171204401 is a prime.

It is not a weakly prime, because it can be changed into another prime (171206419) 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, 85603224 + 85603225.

It is an arithmetic number, because the mean of its divisors is an integer number (85603225).

Almost surely, 2^171206449 is an apocalyptic number.

It is an amenable number.

171206449 is a deficient number, since it is larger than the sum of its proper divisors (1).

171206449 is an equidigital number, since it uses as much as digits as its factorization.

171206449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 171206449 is about 13084.5882243195. The cubic root of 171206449 is about 555.2731918020.

The spelling of 171206449 in words is "one hundred seventy-one million, two hundred six thousand, four hundred forty-nine".