533281 has 16 divisors (see below), whose sum is σ = 656640. Its totient is φ = 423360.

The previous prime is 533263. The next prime is 533297. The reversal of 533281 is 182335.

It is not a de Polignac number, because 533281 - 2⁵ = 533249 is a prime.

It is a super-2 number, since 2×533281² = 568777249922, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (720) is a multiple of the sum of its prime divisors (144).

533281 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7476 + ... + 7546.

It is an arithmetic number, because the mean of its divisors is an integer number (41040).

2⁵³³²⁸¹ is an apocalyptic number.

It is an amenable number.

533281 is a deficient number, since it is larger than the sum of its proper divisors (123359).

533281 is a wasteful number, since it uses less digits than its factorization.

533281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144.

The product of its digits is 720, while the sum is 22.

The square root of 533281 is about 730.2609122772. The cubic root of 533281 is about 81.0933740050.

The spelling of 533281 in words is "five hundred thirty-three thousand, two hundred eighty-one".