352221427 has 2 divisors, whose sum is σ = 352221428. Its totient is φ = 352221426.

The previous prime is 352221391. The next prime is 352221433. The reversal of 352221427 is 724122253.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 352221427 - 2¹⁵ = 352188659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 352221395 and 352221404.

It is not a weakly prime, because it can be changed into another prime (352221497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176110713 + 176110714.

It is an arithmetic number, because the mean of its divisors is an integer number (176110714).

Almost surely, 2^352221427 is an apocalyptic number.

352221427 is a deficient number, since it is larger than the sum of its proper divisors (1).

352221427 is an equidigital number, since it uses as much as digits as its factorization.

352221427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 28.

The square root of 352221427 is about 18767.5631609434. The cubic root of 352221427 is about 706.2176880093.

The spelling of 352221427 in words is "three hundred fifty-two million, two hundred twenty-one thousand, four hundred twenty-seven".