354330021 has 8 divisors (see below), whose sum is σ = 474914304. Its totient is φ = 234982880.

The previous prime is 354330017. The next prime is 354330023. The reversal of 354330021 is 120033453.

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 354330021 - 2² = 354330017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354330021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354330023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308616 + ... + 309761.

It is an arithmetic number, because the mean of its divisors is an integer number (59364288).

Almost surely, 2^354330021 is an apocalyptic number.

It is an amenable number.

354330021 is a deficient number, since it is larger than the sum of its proper divisors (120584283).

354330021 is a wasteful number, since it uses less digits than its factorization.

354330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618571.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 354330021 is about 18823.6558882700. The cubic root of 354330021 is about 707.6241561465.

Adding to 354330021 its reverse (120033453), we get a palindrome (474363474).

The spelling of 354330021 in words is "three hundred fifty-four million, three hundred thirty thousand, twenty-one".