352899221 has 2 divisors, whose sum is σ = 352899222. Its totient is φ = 352899220.

The previous prime is 352899191. The next prime is 352899227. The reversal of 352899221 is 122998253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245548900 + 107350321 = 15670^2 + 10361^2 .

It is a cyclic number.

It is not a de Polignac number, because 352899221 - 2¹⁴ = 352882837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (352899227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176449610 + 176449611.

It is an arithmetic number, because the mean of its divisors is an integer number (176449611).

Almost surely, 2^352899221 is an apocalyptic number.

It is an amenable number.

352899221 is a deficient number, since it is larger than the sum of its proper divisors (1).

352899221 is an equidigital number, since it uses as much as digits as its factorization.

352899221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 352899221 is about 18785.6120741380. The cubic root of 352899221 is about 706.6703988717.

The spelling of 352899221 in words is "three hundred fifty-two million, eight hundred ninety-nine thousand, two hundred twenty-one".