871955 has 12 divisors (see below), whose sum is σ = 1217520. Its totient is φ = 597744.

The previous prime is 871931. The next prime is 871957. The reversal of 871955 is 559178.

871955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 871955 - 2¹⁰ = 870931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1535 + ... + 2024.

It is an arithmetic number, because the mean of its divisors is an integer number (101460).

2⁸⁷¹⁹⁵⁵ is an apocalyptic number.

871955 is a deficient number, since it is larger than the sum of its proper divisors (345565).

871955 is a wasteful number, since it uses less digits than its factorization.

871955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578 (or 3571 counting only the distinct ones).

The product of its digits is 12600, while the sum is 35.

The square root of 871955 is about 933.7853072307. The cubic root of 871955 is about 95.5354801786.

The spelling of 871955 in words is "eight hundred seventy-one thousand, nine hundred fifty-five".