291202201 has 2 divisors, whose sum is σ = 291202202. Its totient is φ = 291202200.

The previous prime is 291202159. The next prime is 291202207. The reversal of 291202201 is 102202192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261662976 + 29539225 = 16176^2 + 5435^2 .

It is a cyclic number.

It is not a de Polignac number, because 291202201 - 2¹⁷ = 291071129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (291202207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145601100 + 145601101.

It is an arithmetic number, because the mean of its divisors is an integer number (145601101).

Almost surely, 2^291202201 is an apocalyptic number.

It is an amenable number.

291202201 is a deficient number, since it is larger than the sum of its proper divisors (1).

291202201 is an equidigital number, since it uses as much as digits as its factorization.

291202201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 291202201 is about 17064.6476963341. The cubic root of 291202201 is about 662.8239884873.

Adding to 291202201 its reverse (102202192), we get a palindrome (393404393).

The spelling of 291202201 in words is "two hundred ninety-one million, two hundred two thousand, two hundred one".