887181 has 4 divisors (see below), whose sum is σ = 1182912. Its totient is φ = 591452.

The previous prime is 887177. The next prime is 887191. The reversal of 887181 is 181788.

887181 is nontrivially palindromic in base 16.

887181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 887181 - 2² = 887177 is a prime.

It is a super-2 number, since 2×887181² = 1574180253522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

887181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (887101) 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, 147861 + ... + 147866.

It is an arithmetic number, because the mean of its divisors is an integer number (295728).

2⁸⁸⁷¹⁸¹ is an apocalyptic number.

It is an amenable number.

887181 is a deficient number, since it is larger than the sum of its proper divisors (295731).

887181 is a wasteful number, since it uses less digits than its factorization.

887181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295730.

The product of its digits is 3584, while the sum is 33.

The square root of 887181 is about 941.9028612336. The cubic root of 887181 is about 96.0883518218.

The spelling of 887181 in words is "eight hundred eighty-seven thousand, one hundred eighty-one".