270161 has 8 divisors (see below), whose sum is σ = 290400. Its totient is φ = 250560.

The previous prime is 270157. The next prime is 270163. The reversal of 270161 is 161072.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 270161 - 2² = 270157 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 270161.

It is not an unprimeable number, because it can be changed into a prime (270163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001 + ... + 1241.

It is an arithmetic number, because the mean of its divisors is an integer number (36300).

2²⁷⁰¹⁶¹ is an apocalyptic number.

It is an amenable number.

270161 is a deficient number, since it is larger than the sum of its proper divisors (20239).

270161 is a wasteful number, since it uses less digits than its factorization.

270161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 270161 is about 519.7701415049. The cubic root of 270161 is about 64.6458849626.

The spelling of 270161 in words is "two hundred seventy thousand, one hundred sixty-one".