355221836 has 6 divisors (see below), whose sum is σ = 621638220. Its totient is φ = 177610916.

The previous prime is 355221833. The next prime is 355221871. The reversal of 355221836 is 638122553.

It is a junction number, because it is equal to n+sod(n) for n = 355221796 and 355221805.

It is not an unprimeable number, because it can be changed into a prime (355221833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44402726 + ... + 44402733.

It is an arithmetic number, because the mean of its divisors is an integer number (103606370).

Almost surely, 2^355221836 is an apocalyptic number.

It is an amenable number.

355221836 is a deficient number, since it is larger than the sum of its proper divisors (266416384).

355221836 is a wasteful number, since it uses less digits than its factorization.

355221836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88805463 (or 88805461 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 355221836 is about 18847.3296782329. The cubic root of 355221836 is about 708.2173330258.

The spelling of 355221836 in words is "three hundred fifty-five million, two hundred twenty-one thousand, eight hundred thirty-six".