355120289 has 2 divisors, whose sum is σ = 355120290. Its totient is φ = 355120288.

The previous prime is 355120243. The next prime is 355120307. The reversal of 355120289 is 982021553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223054225 + 132066064 = 14935^2 + 11492^2 .

It is a cyclic number.

It is not a de Polignac number, because 355120289 - 2¹⁶ = 355054753 is a prime.

It is a super-2 number, since 2×355120289² = 252220839318887042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (355120219) 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, 177560144 + 177560145.

It is an arithmetic number, because the mean of its divisors is an integer number (177560145).

Almost surely, 2^355120289 is an apocalyptic number.

It is an amenable number.

355120289 is a deficient number, since it is larger than the sum of its proper divisors (1).

355120289 is an equidigital number, since it uses as much as digits as its factorization.

355120289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 355120289 is about 18844.6355496730. The cubic root of 355120289 is about 708.1498407413.

The spelling of 355120289 in words is "three hundred fifty-five million, one hundred twenty thousand, two hundred eighty-nine".