161271206 has 8 divisors (see below), whose sum is σ = 242320680. Its totient is φ = 80497648.

The previous prime is 161271203. The next prime is 161271217. The reversal of 161271206 is 602172161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161271203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67511 + ... + 69858.

It is an arithmetic number, because the mean of its divisors is an integer number (30290085).

Almost surely, 2^161271206 is an apocalyptic number.

161271206 is a deficient number, since it is larger than the sum of its proper divisors (81049474).

161271206 is a wasteful number, since it uses less digits than its factorization.

161271206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137958.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 161271206 is about 12699.2600571844. The cubic root of 161271206 is about 544.3174757125.

The spelling of 161271206 in words is "one hundred sixty-one million, two hundred seventy-one thousand, two hundred six".