115278841 has 2 divisors, whose sum is σ = 115278842. Its totient is φ = 115278840.

The previous prime is 115278817. The next prime is 115278881. The reversal of 115278841 is 148872511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100100025 + 15178816 = 10005^2 + 3896^2 .

It is a cyclic number.

It is not a de Polignac number, because 115278841 - 2⁹ = 115278329 is a prime.

It is a super-2 number, since 2×115278841² = 26578422364606562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115278841.

It is not a weakly prime, because it can be changed into another prime (115278811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57639420 + 57639421.

It is an arithmetic number, because the mean of its divisors is an integer number (57639421).

Almost surely, 2^115278841 is an apocalyptic number.

It is an amenable number.

115278841 is a deficient number, since it is larger than the sum of its proper divisors (1).

115278841 is an equidigital number, since it uses as much as digits as its factorization.

115278841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 37.

The square root of 115278841 is about 10736.7984520526. The cubic root of 115278841 is about 486.6871359273.

The spelling of 115278841 in words is "one hundred fifteen million, two hundred seventy-eight thousand, eight hundred forty-one".