355342217 has 2 divisors, whose sum is σ = 355342218. Its totient is φ = 355342216.

The previous prime is 355342213. The next prime is 355342219. The reversal of 355342217 is 712243553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293813881 + 61528336 = 17141^2 + 7844^2 .

It is a cyclic number.

It is not a de Polignac number, because 355342217 - 2² = 355342213 is a prime.

Together with 355342219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (355342213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177671108 + 177671109.

It is an arithmetic number, because the mean of its divisors is an integer number (177671109).

Almost surely, 2^355342217 is an apocalyptic number.

It is an amenable number.

355342217 is a deficient number, since it is larger than the sum of its proper divisors (1).

355342217 is an equidigital number, since it uses as much as digits as its factorization.

355342217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 32.

The square root of 355342217 is about 18850.5229900923. The cubic root of 355342217 is about 708.2973264957.

The spelling of 355342217 in words is "three hundred fifty-five million, three hundred forty-two thousand, two hundred seventeen".