523871 has 4 divisors (see below), whose sum is σ = 546672. Its totient is φ = 501072.

The previous prime is 523867. The next prime is 523877. The reversal of 523871 is 178325.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523871 - 2² = 523867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 523871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523877) 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, 11366 + ... + 11411.

It is an arithmetic number, because the mean of its divisors is an integer number (136668).

2⁵²³⁸⁷¹ is an apocalyptic number.

523871 is a deficient number, since it is larger than the sum of its proper divisors (22801).

523871 is a wasteful number, since it uses less digits than its factorization.

523871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22800.

The product of its digits is 1680, while the sum is 26.

The square root of 523871 is about 723.7893339916. The cubic root of 523871 is about 80.6135634681.

The spelling of 523871 in words is "five hundred twenty-three thousand, eight hundred seventy-one".