171201049 has 2 divisors, whose sum is σ = 171201050. Its totient is φ = 171201048.

The previous prime is 171201047. The next prime is 171201053. The reversal of 171201049 is 940102171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115175824 + 56025225 = 10732^2 + 7485^2 .

It is a cyclic number.

It is not a de Polignac number, because 171201049 - 2¹ = 171201047 is a prime.

Together with 171201047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (171201047) 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, 85600524 + 85600525.

It is an arithmetic number, because the mean of its divisors is an integer number (85600525).

Almost surely, 2^171201049 is an apocalyptic number.

It is an amenable number.

171201049 is a deficient number, since it is larger than the sum of its proper divisors (1).

171201049 is an equidigital number, since it uses as much as digits as its factorization.

171201049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 171201049 is about 13084.3818730577. The cubic root of 171201049 is about 555.2673538078.

The spelling of 171201049 in words is "one hundred seventy-one million, two hundred one thousand, forty-nine".