355352221 has 8 divisors (see below), whose sum is σ = 413000640. Its totient is φ = 299424768.

The previous prime is 355352209. The next prime is 355352237. The reversal of 355352221 is 122253553.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 355352221 - 2⁵ = 355352189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 355352221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355352281) 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 in 7 ways as a sum of consecutive naturals, for example, 429796 + ... + 430621.

It is an arithmetic number, because the mean of its divisors is an integer number (51625080).

Almost surely, 2^355352221 is an apocalyptic number.

It is an amenable number.

355352221 is a deficient number, since it is larger than the sum of its proper divisors (57648419).

355352221 is an equidigital number, since it uses as much as digits as its factorization.

355352221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860483.

The product of its digits is 9000, while the sum is 28.

The square root of 355352221 is about 18850.7883389528. The cubic root of 355352221 is about 708.3039733651.

The spelling of 355352221 in words is "three hundred fifty-five million, three hundred fifty-two thousand, two hundred twenty-one".