543653 has 6 divisors (see below), whose sum is σ = 597702. Its totient is φ = 494120.

The previous prime is 543637. The next prime is 543659. The reversal of 543653 is 356345.

It can be written as a sum of positive squares in only one way, i.e., 543169 + 484 = 737^2 + 22^2 .

It is not a de Polignac number, because 543653 - 2⁴ = 543637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2126 + ... + 2367.

It is an arithmetic number, because the mean of its divisors is an integer number (99617).

2⁵⁴³⁶⁵³ is an apocalyptic number.

It is an amenable number.

543653 is a deficient number, since it is larger than the sum of its proper divisors (54049).

543653 is a wasteful number, since it uses less digits than its factorization.

543653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515 (or 4504 counting only the distinct ones).

The product of its digits is 5400, while the sum is 26.

The square root of 543653 is about 737.3282850942. The cubic root of 543653 is about 81.6157413083.

Adding to 543653 its reverse (356345), we get a palindrome (899998).

The spelling of 543653 in words is "five hundred forty-three thousand, six hundred fifty-three".