543541 has 4 divisors (see below), whose sum is σ = 575532. Its totient is φ = 511552.

The previous prime is 543539. The next prime is 543551. The reversal of 543541 is 145345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 483025 + 60516 = 695^2 + 246^2 .

It is a cyclic number.

It is not a de Polignac number, because 543541 - 2¹ = 543539 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 (543551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15970 + ... + 16003.

It is an arithmetic number, because the mean of its divisors is an integer number (143883).

2⁵⁴³⁵⁴¹ is an apocalyptic number.

It is an amenable number.

543541 is a deficient number, since it is larger than the sum of its proper divisors (31991).

543541 is a wasteful number, since it uses less digits than its factorization.

543541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31990.

The product of its digits is 1200, while the sum is 22.

The square root of 543541 is about 737.2523312951. The cubic root of 543541 is about 81.6101362681.

Adding to 543541 its reverse (145345), we get a palindrome (688886).

It can be divided in two parts, 5435 and 41, that added together give a square (5476 = 74²).

The spelling of 543541 in words is "five hundred forty-three thousand, five hundred forty-one".