355223405 has 4 divisors (see below), whose sum is σ = 426268092. Its totient is φ = 284178720.

The previous prime is 355223369. The next prime is 355223417. The reversal of 355223405 is 504322553.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70930084 + 284293321 = 8422^2 + 16861^2 .

It is not a de Polignac number, because 355223405 - 2¹² = 355219309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35522336 + ... + 35522345.

It is an arithmetic number, because the mean of its divisors is an integer number (106567023).

Almost surely, 2^355223405 is an apocalyptic number.

It is an amenable number.

355223405 is a deficient number, since it is larger than the sum of its proper divisors (71044687).

355223405 is an equidigital number, since it uses as much as digits as its factorization.

355223405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71044686.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 355223405 is about 18847.3713021206. The cubic root of 355223405 is about 708.2183757463.

Adding to 355223405 its reverse (504322553), we get a palindrome (859545958).

The spelling of 355223405 in words is "three hundred fifty-five million, two hundred twenty-three thousand, four hundred five".