115243155 has 20 divisors (see below), whose sum is σ = 206584752. Its totient is φ = 61462800.

The previous prime is 115243111. The next prime is 115243159. The reversal of 115243155 is 551342511.

It is not a de Polignac number, because 115243155 - 2¹¹ = 115241107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115243159) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 141871 + ... + 142680.

Almost surely, 2^115243155 is an apocalyptic number.

115243155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115243155 is a deficient number, since it is larger than the sum of its proper divisors (91341597).

115243155 is an equidigital number, since it uses as much as digits as its factorization.

115243155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284568 (or 284559 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 115243155 is about 10735.1364686249. The cubic root of 115243155 is about 486.6369107242.

Adding to 115243155 its reverse (551342511), we get a palindrome (666585666).

The spelling of 115243155 in words is "one hundred fifteen million, two hundred forty-three thousand, one hundred fifty-five".