871541 has 4 divisors (see below), whose sum is σ = 950784. Its totient is φ = 792300.

The previous prime is 871531. The next prime is 871553. The reversal of 871541 is 145178.

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 871541 - 2⁶ = 871477 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 871541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39605 + ... + 39626.

It is an arithmetic number, because the mean of its divisors is an integer number (237696).

2⁸⁷¹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

871541 is a deficient number, since it is larger than the sum of its proper divisors (79243).

871541 is a wasteful number, since it uses less digits than its factorization.

871541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79242.

The product of its digits is 1120, while the sum is 26.

The square root of 871541 is about 933.5636025467. The cubic root of 871541 is about 95.5203578577.

The spelling of 871541 in words is "eight hundred seventy-one thousand, five hundred forty-one".