451563841 has 2 divisors, whose sum is σ = 451563842. Its totient is φ = 451563840.

The previous prime is 451563811. The next prime is 451563859. The reversal of 451563841 is 148365154.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408201616 + 43362225 = 20204^2 + 6585^2 .

It is a cyclic number.

It is not a de Polignac number, because 451563841 - 2¹⁷ = 451432769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451563841.

It is not a weakly prime, because it can be changed into another prime (451563811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225781920 + 225781921.

It is an arithmetic number, because the mean of its divisors is an integer number (225781921).

Almost surely, 2^451563841 is an apocalyptic number.

It is an amenable number.

451563841 is a deficient number, since it is larger than the sum of its proper divisors (1).

451563841 is an equidigital number, since it uses as much as digits as its factorization.

451563841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 37.

The square root of 451563841 is about 21250.0315529178. The cubic root of 451563841 is about 767.1960994837.

The spelling of 451563841 in words is "four hundred fifty-one million, five hundred sixty-three thousand, eight hundred forty-one".