201066449 has 2 divisors, whose sum is σ = 201066450. Its totient is φ = 201066448.

The previous prime is 201066427. The next prime is 201066451. The reversal of 201066449 is 944660102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 54656449 = 12100^2 + 7393^2 .

It is a cyclic number.

It is not a de Polignac number, because 201066449 - 2¹² = 201062353 is a prime.

Together with 201066451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201066469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100533224 + 100533225.

It is an arithmetic number, because the mean of its divisors is an integer number (100533225).

Almost surely, 2^201066449 is an apocalyptic number.

It is an amenable number.

201066449 is a deficient number, since it is larger than the sum of its proper divisors (1).

201066449 is an equidigital number, since it uses as much as digits as its factorization.

201066449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 201066449 is about 14179.7901606477. The cubic root of 201066449 is about 585.8411441801.

The spelling of 201066449 in words is "two hundred one million, sixty-six thousand, four hundred forty-nine".