351666001 has 2 divisors, whose sum is σ = 351666002. Its totient is φ = 351666000.

The previous prime is 351665987. The next prime is 351666017. The reversal of 351666001 is 100666153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348792976 + 2873025 = 18676^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 351666001 - 2²⁵ = 318111569 is a prime.

It is not a weakly prime, because it can be changed into another prime (351666401) 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, 175833000 + 175833001.

It is an arithmetic number, because the mean of its divisors is an integer number (175833001).

Almost surely, 2^351666001 is an apocalyptic number.

It is an amenable number.

351666001 is a deficient number, since it is larger than the sum of its proper divisors (1).

351666001 is an equidigital number, since it uses as much as digits as its factorization.

351666001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 351666001 is about 18752.7598235566. The cubic root of 351666001 is about 705.8462757859.

The spelling of 351666001 in words is "three hundred fifty-one million, six hundred sixty-six thousand, one".