481666001 has 2 divisors, whose sum is σ = 481666002. Its totient is φ = 481666000.

The previous prime is 481665983. The next prime is 481666039. The reversal of 481666001 is 100666184.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477859600 + 3806401 = 21860^2 + 1951^2 .

It is a cyclic number.

It is not a de Polignac number, because 481666001 - 2⁶ = 481665937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (481666051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240833000 + 240833001.

It is an arithmetic number, because the mean of its divisors is an integer number (240833001).

Almost surely, 2^481666001 is an apocalyptic number.

It is an amenable number.

481666001 is a deficient number, since it is larger than the sum of its proper divisors (1).

481666001 is an equidigital number, since it uses as much as digits as its factorization.

481666001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 481666001 is about 21946.8904631157. The cubic root of 481666001 is about 783.8783396400.

The spelling of 481666001 in words is "four hundred eighty-one million, six hundred sixty-six thousand, one".