355221434 has 8 divisors (see below), whose sum is σ = 536899968. Its totient is φ = 176254780.

The previous prime is 355221421. The next prime is 355221437. The reversal of 355221434 is 434122553.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 355221397 and 355221406.

It is not an unprimeable number, because it can be changed into a prime (355221437) 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 3 ways as a sum of consecutive naturals, for example, 677642 + ... + 678165.

It is an arithmetic number, because the mean of its divisors is an integer number (67112496).

Almost surely, 2^355221434 is an apocalyptic number.

355221434 is a deficient number, since it is larger than the sum of its proper divisors (181678534).

355221434 is a wasteful number, since it uses less digits than its factorization.

355221434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355940.

The product of its digits is 14400, while the sum is 29.

The square root of 355221434 is about 18847.3190135892. The cubic root of 355221434 is about 708.2170658655.

Adding to 355221434 its reverse (434122553), we get a palindrome (789343987).

The spelling of 355221434 in words is "three hundred fifty-five million, two hundred twenty-one thousand, four hundred thirty-four".