115122251 has 4 divisors (see below), whose sum is σ = 118835904. Its totient is φ = 111408600.

The previous prime is 115122229. The next prime is 115122299. The reversal of 115122251 is 152221511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115122251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115122221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1856780 + ... + 1856841.

It is an arithmetic number, because the mean of its divisors is an integer number (29708976).

Almost surely, 2^115122251 is an apocalyptic number.

115122251 is a deficient number, since it is larger than the sum of its proper divisors (3713653).

115122251 is an equidigital number, since it uses as much as digits as its factorization.

115122251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713652.

The product of its digits is 200, while the sum is 20.

The square root of 115122251 is about 10729.5037629892. The cubic root of 115122251 is about 486.4666708619.

Adding to 115122251 its reverse (152221511), we get a palindrome (267343762).

The spelling of 115122251 in words is "one hundred fifteen million, one hundred twenty-two thousand, two hundred fifty-one".