115552121 has 2 divisors, whose sum is σ = 115552122. Its totient is φ = 115552120.

The previous prime is 115552057. The next prime is 115552127. The reversal of 115552121 is 121255511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93799225 + 21752896 = 9685^2 + 4664^2 .

It is a cyclic number.

It is not a de Polignac number, because 115552121 - 2⁶ = 115552057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (115552127) 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, 57776060 + 57776061.

It is an arithmetic number, because the mean of its divisors is an integer number (57776061).

Almost surely, 2^115552121 is an apocalyptic number.

It is an amenable number.

115552121 is a deficient number, since it is larger than the sum of its proper divisors (1).

115552121 is an equidigital number, since it uses as much as digits as its factorization.

115552121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 115552121 is about 10749.5172449743. The cubic root of 115552121 is about 487.0714125777.

The spelling of 115552121 in words is "one hundred fifteen million, five hundred fifty-two thousand, one hundred twenty-one".