450241681 has 2 divisors, whose sum is σ = 450241682. Its totient is φ = 450241680.

The previous prime is 450241661. The next prime is 450241741. The reversal of 450241681 is 186142054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367067281 + 83174400 = 19159^2 + 9120^2 .

It is a cyclic number.

It is not a de Polignac number, because 450241681 - 2⁷ = 450241553 is a prime.

It is a super-2 number, since 2×450241681² = 405435142619411522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (450241661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225120840 + 225120841.

It is an arithmetic number, because the mean of its divisors is an integer number (225120841).

Almost surely, 2^450241681 is an apocalyptic number.

It is an amenable number.

450241681 is a deficient number, since it is larger than the sum of its proper divisors (1).

450241681 is an equidigital number, since it uses as much as digits as its factorization.

450241681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 450241681 is about 21218.8991467512. The cubic root of 450241681 is about 766.4465948264.

The spelling of 450241681 in words is "four hundred fifty million, two hundred forty-one thousand, six hundred eighty-one".