115121255 has 4 divisors (see below), whose sum is σ = 138145512. Its totient is φ = 92097000.

The previous prime is 115121221. The next prime is 115121261. The reversal of 115121255 is 552121511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 115121255 - 2¹⁶ = 115055719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115121255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11512121 + ... + 11512130.

It is an arithmetic number, because the mean of its divisors is an integer number (34536378).

Almost surely, 2^115121255 is an apocalyptic number.

115121255 is a deficient number, since it is larger than the sum of its proper divisors (23024257).

115121255 is an equidigital number, since it uses as much as digits as its factorization.

115121255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23024256.

The product of its digits is 500, while the sum is 23.

The square root of 115121255 is about 10729.4573488131. The cubic root of 115121255 is about 486.4652679411.

Adding to 115121255 its reverse (552121511), we get a palindrome (667242766).

It can be divided in two parts, 11 and 5121255, that multiplied together give a triangular number (56333805 = T₁₀₆₁₄).

The spelling of 115121255 in words is "one hundred fifteen million, one hundred twenty-one thousand, two hundred fifty-five".