115276289 has 4 divisors (see below), whose sum is σ = 117729024. Its totient is φ = 112823556.

The previous prime is 115276283. The next prime is 115276307. The reversal of 115276289 is 982672511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982672511 = 29 ⋅33885259.

It is a cyclic number.

It is not a de Polignac number, because 115276289 - 2¹² = 115272193 is a prime.

It is a super-2 number, since 2×115276289² = 26577245611223042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115276283) 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, 1226297 + ... + 1226390.

It is an arithmetic number, because the mean of its divisors is an integer number (29432256).

Almost surely, 2^115276289 is an apocalyptic number.

It is an amenable number.

115276289 is a deficient number, since it is larger than the sum of its proper divisors (2452735).

115276289 is an equidigital number, since it uses as much as digits as its factorization.

115276289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452734.

The product of its digits is 60480, while the sum is 41.

The square root of 115276289 is about 10736.6796077745. The cubic root of 115276289 is about 486.6835445347.

The spelling of 115276289 in words is "one hundred fifteen million, two hundred seventy-six thousand, two hundred eighty-nine".