450018241 has 4 divisors (see below), whose sum is σ = 450061252. Its totient is φ = 449975232.

The previous prime is 450018221. The next prime is 450018251. The reversal of 450018241 is 142810054.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 142810054 = 2 ⋅71405027.

It can be written as a sum of positive squares in 2 ways, for example, as 123854641 + 326163600 = 11129^2 + 18060^2 .

It is a cyclic number.

It is not a de Polignac number, because 450018241 - 2⁷ = 450018113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450018221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5461 + ... + 30493.

It is an arithmetic number, because the mean of its divisors is an integer number (112515313).

Almost surely, 2^450018241 is an apocalyptic number.

It is an amenable number.

450018241 is a deficient number, since it is larger than the sum of its proper divisors (43011).

450018241 is a wasteful number, since it uses less digits than its factorization.

450018241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43010.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 450018241 is about 21213.6333757327. The cubic root of 450018241 is about 766.3197865132.

Adding to 450018241 its reverse (142810054), we get a palindrome (592828295).

The spelling of 450018241 in words is "four hundred fifty million, eighteen thousand, two hundred forty-one".