450552681 has 48 divisors (see below), whose sum is σ = 722816640. Its totient is φ = 269153280.

The previous prime is 450552679. The next prime is 450552709. The reversal of 450552681 is 186255054.

450552681 is a `hidden beast` number, since 4 + 50 + 5 + 526 + 81 = 666.

It is not a de Polignac number, because 450552681 - 2¹ = 450552679 is a prime.

It is a super-2 number, since 2×450552681² = 405995436712575522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (450552601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 380911 + ... + 382091.

It is an arithmetic number, because the mean of its divisors is an integer number (15058680).

Almost surely, 2^450552681 is an apocalyptic number.

It is an amenable number.

450552681 is a deficient number, since it is larger than the sum of its proper divisors (272263959).

450552681 is a wasteful number, since it uses less digits than its factorization.

450552681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 450552681 is about 21226.2262543298. The cubic root of 450552681 is about 766.6230260183.

The spelling of 450552681 in words is "four hundred fifty million, five hundred fifty-two thousand, six hundred eighty-one".