451000001 has 4 divisors (see below), whose sum is σ = 451100100. Its totient is φ = 450899904.

The previous prime is 450999977. The next prime is 451000009. The reversal of 451000001 is 100000154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18318400 + 432681601 = 4280^2 + 20801^2 .

It is a cyclic number.

It is not a de Polignac number, because 451000001 - 2⁶ = 450999937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (451000009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42956 + ... + 52413.

It is an arithmetic number, because the mean of its divisors is an integer number (112775025).

Almost surely, 2^451000001 is an apocalyptic number.

It is an amenable number.

451000001 is a deficient number, since it is larger than the sum of its proper divisors (100099).

451000001 is an equidigital number, since it uses as much as digits as its factorization.

451000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100098.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 451000001 is about 21236.7606051394. The cubic root of 451000001 is about 766.8766496237.

Adding to 451000001 its reverse (100000154), we get a palindrome (551000155).

The spelling of 451000001 in words is "four hundred fifty-one million, one", and thus it is an aban number.