115265278 has 4 divisors (see below), whose sum is σ = 172897920. Its totient is φ = 57632638.

The previous prime is 115265263. The next prime is 115265281. The reversal of 115265278 is 872562511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 872562511 = 157 ⋅5557723.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28816318 + ... + 28816321.

It is an arithmetic number, because the mean of its divisors is an integer number (43224480).

Almost surely, 2^115265278 is an apocalyptic number.

115265278 is a deficient number, since it is larger than the sum of its proper divisors (57632642).

115265278 is an equidigital number, since it uses as much as digits as its factorization.

115265278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57632641.

The product of its digits is 33600, while the sum is 37.

The square root of 115265278 is about 10736.1668206115. The cubic root of 115265278 is about 486.6680483062.

It can be divided in two parts, 1152 and 65278, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 115265278 in words is "one hundred fifteen million, two hundred sixty-five thousand, two hundred seventy-eight".