523887 has 32 divisors (see below), whose sum is σ = 913920. Its totient is φ = 259200.

The previous prime is 523877. The next prime is 523903. The reversal of 523887 is 788325.

It is not a de Polignac number, because 523887 - 2⁷ = 523759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5137 + ... + 5237.

It is an arithmetic number, because the mean of its divisors is an integer number (28560).

2⁵²³⁸⁸⁷ is an apocalyptic number.

523887 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

523887 is a deficient number, since it is larger than the sum of its proper divisors (390033).

523887 is a wasteful number, since it uses less digits than its factorization.

523887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143.

The product of its digits is 13440, while the sum is 33.

The square root of 523887 is about 723.8003868471. The cubic root of 523887 is about 80.6143841560.

Multiplying 523887 by its sum of digits (33), we get a palindrome (17288271).

The spelling of 523887 in words is "five hundred twenty-three thousand, eight hundred eighty-seven".