543081 has 16 divisors (see below), whose sum is σ = 903168. Its totient is φ = 282000.

The previous prime is 543061. The next prime is 543097. The reversal of 543081 is 180345.

It is not a de Polignac number, because 543081 - 2⁶ = 543017 is a prime.

It is a super-2 number, since 2×543081² = 589873945122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

543081 is a lucky number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (543061) 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, 945 + ... + 1406.

It is an arithmetic number, because the mean of its divisors is an integer number (56448).

2⁵⁴³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

543081 is a deficient number, since it is larger than the sum of its proper divisors (360087).

543081 is a wasteful number, since it uses less digits than its factorization.

543081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372.

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

The square root of 543081 is about 736.9402960892. The cubic root of 543081 is about 81.5871074883.

The spelling of 543081 in words is "five hundred forty-three thousand, eighty-one".