173270161 has 4 divisors (see below), whose sum is σ = 173302272. Its totient is φ = 173238052.

The previous prime is 173270159. The next prime is 173270183. The reversal of 173270161 is 161072371.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 173270161 - 2¹ = 173270159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173270131) 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 in 3 ways as a sum of consecutive naturals, for example, 5761 + ... + 19486.

It is an arithmetic number, because the mean of its divisors is an integer number (43325568).

Almost surely, 2^173270161 is an apocalyptic number.

It is an amenable number.

173270161 is a deficient number, since it is larger than the sum of its proper divisors (32111).

173270161 is an equidigital number, since it uses as much as digits as its factorization.

173270161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32110.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 173270161 is about 13163.2124118697. The cubic root of 173270161 is about 557.4953632304.

The spelling of 173270161 in words is "one hundred seventy-three million, two hundred seventy thousand, one hundred sixty-one".