450857281 has 6 divisors (see below), whose sum is σ = 524466690. Its totient is φ = 386449056.

The previous prime is 450857269. The next prime is 450857359. The reversal of 450857281 is 182758054.

It can be written as a sum of positive squares in only one way, i.e., 429318400 + 21538881 = 20720^2 + 4641^2 .

It is not a de Polignac number, because 450857281 - 2¹⁷ = 450726209 is a prime.

It is a super-2 number, since 2×450857281² = 406544575661425922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450857581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4600536 + ... + 4600633.

It is an arithmetic number, because the mean of its divisors is an integer number (87411115).

Almost surely, 2^450857281 is an apocalyptic number.

It is an amenable number.

450857281 is a deficient number, since it is larger than the sum of its proper divisors (73609409).

450857281 is an equidigital number, since it uses as much as digits as its factorization.

450857281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9201183 (or 9201176 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 450857281 is about 21233.4001281001. The cubic root of 450857281 is about 766.7957477890.

The spelling of 450857281 in words is "four hundred fifty million, eight hundred fifty-seven thousand, two hundred eighty-one".