451334813 has 2 divisors, whose sum is σ = 451334814. Its totient is φ = 451334812.

The previous prime is 451334789. The next prime is 451334831. The reversal of 451334813 is 318433154.

Together with next prime (451334831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370100644 + 81234169 = 19238^2 + 9013^2 .

It is a cyclic number.

It is not a de Polignac number, because 451334813 - 2²⁰ = 450286237 is a prime.

It is a super-2 number, since 2×451334813² = 407406226851489938, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451334813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451334833) 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 as a sum of consecutive naturals, namely, 225667406 + 225667407.

It is an arithmetic number, because the mean of its divisors is an integer number (225667407).

Almost surely, 2^451334813 is an apocalyptic number.

It is an amenable number.

451334813 is a deficient number, since it is larger than the sum of its proper divisors (1).

451334813 is an equidigital number, since it uses as much as digits as its factorization.

451334813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 451334813 is about 21244.6419833331. The cubic root of 451334813 is about 767.0663731958.

Adding to 451334813 its reverse (318433154), we get a palindrome (769767967).

The spelling of 451334813 in words is "four hundred fifty-one million, three hundred thirty-four thousand, eight hundred thirteen".