881161 has 6 divisors (see below), whose sum is σ = 936350. Its totient is φ = 829056.

The previous prime is 881159. The next prime is 881171. The reversal of 881161 is 161188.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 175561 + 705600 = 419^2 + 840^2 .

It is not a de Polignac number, because 881161 - 2¹ = 881159 is a prime.

It is a Duffinian number.

881161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (881141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1236 + ... + 1813.

2⁸⁸¹¹⁶¹ is an apocalyptic number.

It is an amenable number.

881161 is a deficient number, since it is larger than the sum of its proper divisors (55189).

881161 is a wasteful number, since it uses less digits than its factorization.

881161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083 (or 3066 counting only the distinct ones).

The product of its digits is 384, while the sum is 25.

The square root of 881161 is about 938.7017630749. The cubic root of 881161 is about 95.8705213372.

The spelling of 881161 in words is "eight hundred eighty-one thousand, one hundred sixty-one".