355330421 has 8 divisors (see below), whose sum is σ = 358898904. Its totient is φ = 351769600.

The previous prime is 355330411. The next prime is 355330489. The reversal of 355330421 is 124033553.

It can be written as a sum of positive squares in 4 ways, for example, as 7921 + 355322500 = 89^2 + 18850^2 .

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 355330421 - 2⁶ = 355330357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355330411) 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, 145805 + ... + 148221.

It is an arithmetic number, because the mean of its divisors is an integer number (44862363).

Almost surely, 2^355330421 is an apocalyptic number.

It is an amenable number.

355330421 is a deficient number, since it is larger than the sum of its proper divisors (3568483).

355330421 is a wasteful number, since it uses less digits than its factorization.

355330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 355330421 is about 18850.2101049299. The cubic root of 355330421 is about 708.2894888233.

Adding to 355330421 its reverse (124033553), we get a palindrome (479363974).

The spelling of 355330421 in words is "three hundred fifty-five million, three hundred thirty thousand, four hundred twenty-one".