9157201 has 2 divisors, whose sum is σ = 9157202. Its totient is φ = 9157200.

The previous prime is 9157157. The next prime is 9157219. The reversal of 9157201 is 1027519.

9157201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8116801 + 1040400 = 2849^2 + 1020^2 .

It is an emirp because it is prime and its reverse (1027519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9157201 - 2⁷ = 9157073 is a prime.

9157201 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9157231) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4578600 + 4578601.

It is an arithmetic number, because the mean of its divisors is an integer number (4578601).

Almost surely, 2^9157201 is an apocalyptic number.

It is an amenable number.

9157201 is a deficient number, since it is larger than the sum of its proper divisors (1).

9157201 is an equidigital number, since it uses as much as digits as its factorization.

9157201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 9157201 is about 3026.0867469390. The cubic root of 9157201 is about 209.2124774574.

The spelling of 9157201 in words is "nine million, one hundred fifty-seven thousand, two hundred one".