115218751 has 2 divisors, whose sum is σ = 115218752. Its totient is φ = 115218750.

The previous prime is 115218749. The next prime is 115218757. The reversal of 115218751 is 157812511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115218751 - 2¹ = 115218749 is a prime.

Together with 115218749, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115218757) 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, 57609375 + 57609376.

It is an arithmetic number, because the mean of its divisors is an integer number (57609376).

Almost surely, 2^115218751 is an apocalyptic number.

115218751 is a deficient number, since it is larger than the sum of its proper divisors (1).

115218751 is an equidigital number, since it uses as much as digits as its factorization.

115218751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2800, while the sum is 31.

The square root of 115218751 is about 10733.9997670952. Note that the first 3 decimals coincide. The cubic root of 115218751 is about 486.6025580677.

The spelling of 115218751 in words is "one hundred fifteen million, two hundred eighteen thousand, seven hundred fifty-one".