353420261 has 2 divisors, whose sum is σ = 353420262. Its totient is φ = 353420260.

The previous prime is 353420257. The next prime is 353420267. The reversal of 353420261 is 162024353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352275361 + 1144900 = 18769^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 353420261 - 2² = 353420257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 353420261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353420267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176710130 + 176710131.

It is an arithmetic number, because the mean of its divisors is an integer number (176710131).

Almost surely, 2^353420261 is an apocalyptic number.

It is an amenable number.

353420261 is a deficient number, since it is larger than the sum of its proper divisors (1).

353420261 is an equidigital number, since it uses as much as digits as its factorization.

353420261 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 353420261 is about 18799.4750192658. The cubic root of 353420261 is about 707.0180169821.

The spelling of 353420261 in words is "three hundred fifty-three million, four hundred twenty thousand, two hundred sixty-one".