353021 has 2 divisors, whose sum is σ = 353022. Its totient is φ = 353020.

The previous prime is 353011. The next prime is 353047. The reversal of 353021 is 120353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 290521 + 62500 = 539^2 + 250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-353021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 352987 and 353005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176510 + 176511.

It is an arithmetic number, because the mean of its divisors is an integer number (176511).

2³⁵³⁰²¹ is an apocalyptic number.

It is an amenable number.

353021 is a deficient number, since it is larger than the sum of its proper divisors (1).

353021 is an equidigital number, since it uses as much as digits as its factorization.

353021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 353021 is about 594.1557034987. The cubic root of 353021 is about 70.6751675822.

Adding to 353021 its reverse (120353), we get a palindrome (473374).

The spelling of 353021 in words is "three hundred fifty-three thousand, twenty-one".