115533143 has 16 divisors (see below), whose sum is σ = 128583936. Its totient is φ = 102930240.

The previous prime is 115533137. The next prime is 115533161. The reversal of 115533143 is 341335511.

It is a cyclic number.

It is not a de Polignac number, because 115533143 - 2¹⁶ = 115467607 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 (115533113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120755 + ... + 121707.

It is an arithmetic number, because the mean of its divisors is an integer number (8036496).

Almost surely, 2^115533143 is an apocalyptic number.

115533143 is a deficient number, since it is larger than the sum of its proper divisors (13050793).

115533143 is a wasteful number, since it uses less digits than its factorization.

115533143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its digits is 2700, while the sum is 26.

The square root of 115533143 is about 10748.6344714108. The cubic root of 115533143 is about 487.0447459754.

Adding to 115533143 its reverse (341335511), we get a palindrome (456868654).

The spelling of 115533143 in words is "one hundred fifteen million, five hundred thirty-three thousand, one hundred forty-three".