53143543 has 2 divisors, whose sum is σ = 53143544. Its totient is φ = 53143542.

The previous prime is 53143499. The next prime is 53143553. The reversal of 53143543 is 34534135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53143543 - 2⁹ = 53143031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53143553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26571771 + 26571772.

It is an arithmetic number, because the mean of its divisors is an integer number (26571772).

Almost surely, 2^53143543 is an apocalyptic number.

53143543 is a deficient number, since it is larger than the sum of its proper divisors (1).

53143543 is an equidigital number, since it uses as much as digits as its factorization.

53143543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 28.

The square root of 53143543 is about 7289.9617968821. The cubic root of 53143543 is about 375.9673820166.

Adding to 53143543 its reverse (34534135), we get a palindrome (87677678).

The spelling of 53143543 in words is "fifty-three million, one hundred forty-three thousand, five hundred forty-three".