872543 has 6 divisors (see below), whose sum is σ = 1015056. Its totient is φ = 747852.

The previous prime is 872533. The next prime is 872549. The reversal of 872543 is 345278.

It is a happy number.

It is not a de Polignac number, because 872543 - 2⁶ = 872479 is a prime.

It is a super-2 number, since 2×872543² = 1522662573698, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872543.

It is not an unprimeable number, because it can be changed into a prime (872549) 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 5 ways as a sum of consecutive naturals, for example, 8855 + ... + 8952.

It is an arithmetic number, because the mean of its divisors is an integer number (169176).

2⁸⁷²⁵⁴³ is an apocalyptic number.

872543 is a deficient number, since it is larger than the sum of its proper divisors (142513).

872543 is a wasteful number, since it uses less digits than its factorization.

872543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17821 (or 17814 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 872543 is about 934.1001017022. The cubic root of 872543 is about 95.5569500327.

The spelling of 872543 in words is "eight hundred seventy-two thousand, five hundred forty-three".