115550231 has 2 divisors, whose sum is σ = 115550232. Its totient is φ = 115550230.

The previous prime is 115550209. The next prime is 115550243. The reversal of 115550231 is 132055511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115550231 - 2¹⁸ = 115288087 is a prime.

It is a super-2 number, since 2×115550231² = 26703711768306722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 115550197 and 115550206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115550251) 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 as a sum of consecutive naturals, namely, 57775115 + 57775116.

It is an arithmetic number, because the mean of its divisors is an integer number (57775116).

Almost surely, 2^115550231 is an apocalyptic number.

115550231 is a deficient number, since it is larger than the sum of its proper divisors (1).

115550231 is an equidigital number, since it uses as much as digits as its factorization.

115550231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 115550231 is about 10749.4293336902. The cubic root of 115550231 is about 487.0687570084.

The spelling of 115550231 in words is "one hundred fifteen million, five hundred fifty thousand, two hundred thirty-one".