450256181 has 2 divisors, whose sum is σ = 450256182. Its totient is φ = 450256180.

The previous prime is 450256171. The next prime is 450256229. The reversal of 450256181 is 181652054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434055556 + 16200625 = 20834^2 + 4025^2 .

It is a cyclic number.

It is not a de Polignac number, because 450256181 - 2²² = 446061877 is a prime.

It is a super-2 number, since 2×450256181² = 405461257057409522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450256111) 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, 225128090 + 225128091.

It is an arithmetic number, because the mean of its divisors is an integer number (225128091).

Almost surely, 2^450256181 is an apocalyptic number.

It is an amenable number.

450256181 is a deficient number, since it is larger than the sum of its proper divisors (1).

450256181 is an equidigital number, since it uses as much as digits as its factorization.

450256181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 450256181 is about 21219.2408205383. The cubic root of 450256181 is about 766.4548225233.

The spelling of 450256181 in words is "four hundred fifty million, two hundred fifty-six thousand, one hundred eighty-one".