450213161 has 2 divisors, whose sum is σ = 450213162. Its totient is φ = 450213160.

The previous prime is 450213157. The next prime is 450213173. The reversal of 450213161 is 161312054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411075625 + 39137536 = 20275^2 + 6256^2 .

It is a cyclic number.

It is not a de Polignac number, because 450213161 - 2² = 450213157 is a prime.

It is a super-2 number, since 2×450213161² = 405383780675223842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (450213191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225106580 + 225106581.

It is an arithmetic number, because the mean of its divisors is an integer number (225106581).

Almost surely, 2^450213161 is an apocalyptic number.

It is an amenable number.

450213161 is a deficient number, since it is larger than the sum of its proper divisors (1).

450213161 is an equidigital number, since it uses as much as digits as its factorization.

450213161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 450213161 is about 21218.2270937041. The cubic root of 450213161 is about 766.4304112822.

The spelling of 450213161 in words is "four hundred fifty million, two hundred thirteen thousand, one hundred sixty-one".