872571 has 16 divisors (see below), whose sum is σ = 1366784. Its totient is φ = 484704.

The previous prime is 872567. The next prime is 872587. The reversal of 872571 is 175278.

It is a happy number.

872571 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 872571 - 2² = 872567 is a prime.

It is a super-2 number, since 2×872571² = 1522760300082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872561) 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 15 ways as a sum of consecutive naturals, for example, 216 + ... + 1338.

It is an arithmetic number, because the mean of its divisors is an integer number (85424).

2⁸⁷²⁵⁷¹ is an apocalyptic number.

872571 is a deficient number, since it is larger than the sum of its proper divisors (494213).

872571 is a wasteful number, since it uses less digits than its factorization.

872571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170.

The product of its digits is 3920, while the sum is 30.

The square root of 872571 is about 934.1150892690. The cubic root of 872571 is about 95.5579721661.

The spelling of 872571 in words is "eight hundred seventy-two thousand, five hundred seventy-one".