173989201 has 2 divisors, whose sum is σ = 173989202. Its totient is φ = 173989200.

The previous prime is 173989187. The next prime is 173989217. The reversal of 173989201 is 102989371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172948801 + 1040400 = 13151^2 + 1020^2 .

It is an emirp because it is prime and its reverse (102989371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173989201 - 2²³ = 165600593 is a prime.

It is not a weakly prime, because it can be changed into another prime (173989001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86994600 + 86994601.

It is an arithmetic number, because the mean of its divisors is an integer number (86994601).

Almost surely, 2^173989201 is an apocalyptic number.

It is an amenable number.

173989201 is a deficient number, since it is larger than the sum of its proper divisors (1).

173989201 is an equidigital number, since it uses as much as digits as its factorization.

173989201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 173989201 is about 13190.4966168829. The cubic root of 173989201 is about 558.2654674374.

The spelling of 173989201 in words is "one hundred seventy-three million, nine hundred eighty-nine thousand, two hundred one".