355794221 has 2 divisors, whose sum is σ = 355794222. Its totient is φ = 355794220.

The previous prime is 355794181. The next prime is 355794293. The reversal of 355794221 is 122497553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346369321 + 9424900 = 18611^2 + 3070^2 .

It is a cyclic number.

It is not a de Polignac number, because 355794221 - 2¹⁰ = 355793197 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355790221) 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, 177897110 + 177897111.

It is an arithmetic number, because the mean of its divisors is an integer number (177897111).

Almost surely, 2^355794221 is an apocalyptic number.

It is an amenable number.

355794221 is a deficient number, since it is larger than the sum of its proper divisors (1).

355794221 is an equidigital number, since it uses as much as digits as its factorization.

355794221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 355794221 is about 18862.5083432718. The cubic root of 355794221 is about 708.5975230928.

The spelling of 355794221 in words is "three hundred fifty-five million, seven hundred ninety-four thousand, two hundred twenty-one".