9115201 has 2 divisors, whose sum is σ = 9115202. Its totient is φ = 9115200.

The previous prime is 9115189. The next prime is 9115207. The reversal of 9115201 is 1025119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7290000 + 1825201 = 2700^2 + 1351^2 .

It is an emirp because it is prime and its reverse (1025119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9115201 - 2¹⁵ = 9082433 is a prime.

It is not a weakly prime, because it can be changed into another prime (9115207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4557600 + 4557601.

It is an arithmetic number, because the mean of its divisors is an integer number (4557601).

Almost surely, 2^9115201 is an apocalyptic number.

It is an amenable number.

9115201 is a deficient number, since it is larger than the sum of its proper divisors (1).

9115201 is an equidigital number, since it uses as much as digits as its factorization.

9115201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 9115201 is about 3019.1391157083. The cubic root of 9115201 is about 208.8921323981.

It can be divided in two parts, 9115 and 201, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 9115201 in words is "nine million, one hundred fifteen thousand, two hundred one".