115504281 has 12 divisors (see below), whose sum is σ = 167492052. Its totient is φ = 76701696.

The previous prime is 115504267. The next prime is 115504309. The reversal of 115504281 is 182405511.

It can be written as a sum of positive squares in 2 ways, for example, as 77792400 + 37711881 = 8820^2 + 6141^2 .

It is not a de Polignac number, because 115504281 - 2⁶ = 115504217 is a prime.

It is a super-2 number, since 2×115504281² = 26682477858653922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115504201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22656 + ... + 27281.

It is an arithmetic number, because the mean of its divisors is an integer number (13957671).

Almost surely, 2^115504281 is an apocalyptic number.

It is an amenable number.

115504281 is a deficient number, since it is larger than the sum of its proper divisors (51987771).

115504281 is a wasteful number, since it uses less digits than its factorization.

115504281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50200 (or 50197 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 115504281 is about 10747.2917984021. The cubic root of 115504281 is about 487.0041854464.

Adding to 115504281 its reverse (182405511), we get a palindrome (297909792).

The spelling of 115504281 in words is "one hundred fifteen million, five hundred four thousand, two hundred eighty-one".