115538143 has 4 divisors (see below), whose sum is σ = 132043600. Its totient is φ = 99032688.

The previous prime is 115538141. The next prime is 115538167. The reversal of 115538143 is 341835511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115538143 - 2¹ = 115538141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115538141) 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, 8252718 + ... + 8252731.

It is an arithmetic number, because the mean of its divisors is an integer number (33010900).

Almost surely, 2^115538143 is an apocalyptic number.

115538143 is a deficient number, since it is larger than the sum of its proper divisors (16505457).

115538143 is an equidigital number, since it uses as much as digits as its factorization.

115538143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16505456.

The product of its digits is 7200, while the sum is 31.

The square root of 115538143 is about 10748.8670565786. The cubic root of 115538143 is about 487.0517719206.

The spelling of 115538143 in words is "one hundred fifteen million, five hundred thirty-eight thousand, one hundred forty-three".