115220401 has 2 divisors, whose sum is σ = 115220402. Its totient is φ = 115220400.

The previous prime is 115220341. The next prime is 115220419. The reversal of 115220401 is 104022511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115004176 + 216225 = 10724^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 115220401 - 2²¹ = 113123249 is a prime.

It is not a weakly prime, because it can be changed into another prime (115220461) 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, 57610200 + 57610201.

It is an arithmetic number, because the mean of its divisors is an integer number (57610201).

Almost surely, 2^115220401 is an apocalyptic number.

It is an amenable number.

115220401 is a deficient number, since it is larger than the sum of its proper divisors (1).

115220401 is an equidigital number, since it uses as much as digits as its factorization.

115220401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 115220401 is about 10734.0766254019. The cubic root of 115220401 is about 486.6048808678.

Adding to 115220401 its reverse (104022511), we get a palindrome (219242912).

The spelling of 115220401 in words is "one hundred fifteen million, two hundred twenty thousand, four hundred one".