354360221 has 2 divisors, whose sum is σ = 354360222. Its totient is φ = 354360220.

The previous prime is 354360191. The next prime is 354360233. The reversal of 354360221 is 122063453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 304502500 + 49857721 = 17450^2 + 7061^2 .

It is a cyclic number.

It is not a de Polignac number, because 354360221 - 2¹⁰ = 354359197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354360821) 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, 177180110 + 177180111.

It is an arithmetic number, because the mean of its divisors is an integer number (177180111).

Almost surely, 2^354360221 is an apocalyptic number.

It is an amenable number.

354360221 is a deficient number, since it is larger than the sum of its proper divisors (1).

354360221 is an equidigital number, since it uses as much as digits as its factorization.

354360221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 354360221 is about 18824.4580532880. The cubic root of 354360221 is about 707.6442594787.

The spelling of 354360221 in words is "three hundred fifty-four million, three hundred sixty thousand, two hundred twenty-one".