450722509 has 2 divisors, whose sum is σ = 450722510. Its totient is φ = 450722508.

The previous prime is 450722483. The next prime is 450722543. The reversal of 450722509 is 905227054.

It is an a-pointer prime, because the next prime (450722543) can be obtained adding 450722509 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272580100 + 178142409 = 16510^2 + 13347^2 .

It is a cyclic number.

It is not a de Polignac number, because 450722509 - 2⁵ = 450722477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450729509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225361254 + 225361255.

It is an arithmetic number, because the mean of its divisors is an integer number (225361255).

Almost surely, 2^450722509 is an apocalyptic number.

It is an amenable number.

450722509 is a deficient number, since it is larger than the sum of its proper divisors (1).

450722509 is an equidigital number, since it uses as much as digits as its factorization.

450722509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 450722509 is about 21230.2263059064. The cubic root of 450722509 is about 766.7193356591.

The spelling of 450722509 in words is "four hundred fifty million, seven hundred twenty-two thousand, five hundred nine".