4013543 has 2 divisors, whose sum is σ = 4013544. Its totient is φ = 4013542.

The previous prime is 4013521. The next prime is 4013557. The reversal of 4013543 is 3453104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4013543 - 2⁸ = 4013287 is a prime.

It is a super-2 number, since 2×4013543² = 32217054825698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4013563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006771 + 2006772.

It is an arithmetic number, because the mean of its divisors is an integer number (2006772).

Almost surely, 2^4013543 is an apocalyptic number.

4013543 is a deficient number, since it is larger than the sum of its proper divisors (1).

4013543 is an equidigital number, since it uses as much as digits as its factorization.

4013543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 4013543 is about 2003.3828890155. The cubic root of 4013543 is about 158.9190548260.

Adding to 4013543 its reverse (3453104), we get a palindrome (7466647).

The spelling of 4013543 in words is "four million, thirteen thousand, five hundred forty-three".