87143543 has 2 divisors, whose sum is σ = 87143544. Its totient is φ = 87143542.

The previous prime is 87143533. The next prime is 87143561. The reversal of 87143543 is 34534178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87143543 - 2¹² = 87139447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87143533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43571771 + 43571772.

It is an arithmetic number, because the mean of its divisors is an integer number (43571772).

Almost surely, 2^87143543 is an apocalyptic number.

87143543 is a deficient number, since it is larger than the sum of its proper divisors (1).

87143543 is an equidigital number, since it uses as much as digits as its factorization.

87143543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 87143543 is about 9335.0705942698. The cubic root of 87143543 is about 443.3483240011.

The spelling of 87143543 in words is "eighty-seven million, one hundred forty-three thousand, five hundred forty-three".