523281 has 16 divisors (see below), whose sum is σ = 773568. Its totient is φ = 312000.

The previous prime is 523261. The next prime is 523297. The reversal of 523281 is 182325.

It is not a de Polignac number, because 523281 - 2¹³ = 515089 is a prime.

It is a super-2 number, since 2×523281² = 547646009922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523261) 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, 3255 + ... + 3411.

It is an arithmetic number, because the mean of its divisors is an integer number (48348).

2⁵²³²⁸¹ is an apocalyptic number.

It is an amenable number.

523281 is a deficient number, since it is larger than the sum of its proper divisors (250287).

523281 is a wasteful number, since it uses less digits than its factorization.

523281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its digits is 480, while the sum is 21.

The square root of 523281 is about 723.3816420120. The cubic root of 523281 is about 80.5832889228.

Multiplying 523281 by its sum of digits (21), we get a palindrome (10988901).

It can be divided in two parts, 52 and 3281, that added together give a palindrome (3333).

The spelling of 523281 in words is "five hundred twenty-three thousand, two hundred eighty-one".