451811147 has 4 divisors (see below), whose sum is σ = 452483160. Its totient is φ = 451139136.

The previous prime is 451811117. The next prime is 451811153. The reversal of 451811147 is 741118154.

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

It is a cyclic number.

It is not a de Polignac number, because 451811147 - 2²⁸ = 183375691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451811117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334997 + ... + 336342.

It is an arithmetic number, because the mean of its divisors is an integer number (113120790).

Almost surely, 2^451811147 is an apocalyptic number.

451811147 is a deficient number, since it is larger than the sum of its proper divisors (672013).

451811147 is an equidigital number, since it uses as much as digits as its factorization.

451811147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672012.

The product of its digits is 4480, while the sum is 32.

The square root of 451811147 is about 21255.8497124909. The cubic root of 451811147 is about 767.3361295712.

The spelling of 451811147 in words is "four hundred fifty-one million, eight hundred eleven thousand, one hundred forty-seven".