115520143 has 2 divisors, whose sum is σ = 115520144. Its totient is φ = 115520142.

The previous prime is 115520051. The next prime is 115520149. The reversal of 115520143 is 341025511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115520143 - 2⁹ = 115519631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115520149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57760071 + 57760072.

It is an arithmetic number, because the mean of its divisors is an integer number (57760072).

Almost surely, 2^115520143 is an apocalyptic number.

115520143 is a deficient number, since it is larger than the sum of its proper divisors (1).

115520143 is an equidigital number, since it uses as much as digits as its factorization.

115520143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 115520143 is about 10748.0297264196. The cubic root of 115520143 is about 487.0264775691.

Adding to 115520143 its reverse (341025511), we get a palindrome (456545654).

The spelling of 115520143 in words is "one hundred fifteen million, five hundred twenty thousand, one hundred forty-three".