543145541 has 4 divisors (see below), whose sum is σ = 543247212. Its totient is φ = 543043872.

The previous prime is 543145531. The next prime is 543145549. The reversal of 543145541 is 145541345.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145541345 = 5 ⋅29108269.

It can be written as a sum of positive squares in 2 ways, for example, as 284900641 + 258244900 = 16879^2 + 16070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543145541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 543145498 and 543145507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543145549) 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, 42350 + ... + 53663.

It is an arithmetic number, because the mean of its divisors is an integer number (135811803).

Almost surely, 2^543145541 is an apocalyptic number.

It is an amenable number.

543145541 is a deficient number, since it is larger than the sum of its proper divisors (101671).

543145541 is an equidigital number, since it uses as much as digits as its factorization.

543145541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101670.

The product of its digits is 24000, while the sum is 32.

The square root of 543145541 is about 23305.4830672956. The cubic root of 543145541 is about 815.9033936037.

Adding to 543145541 its reverse (145541345), we get a palindrome (688686886).

The spelling of 543145541 in words is "five hundred forty-three million, one hundred forty-five thousand, five hundred forty-one".