450641257 has 4 divisors (see below), whose sum is σ = 491608656. Its totient is φ = 409673860.

The previous prime is 450641251. The next prime is 450641267. The reversal of 450641257 is 752146054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 450641257 - 2³ = 450641249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (450641251) 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 3 ways as a sum of consecutive naturals, for example, 20483683 + ... + 20483704.

It is an arithmetic number, because the mean of its divisors is an integer number (122902164).

Almost surely, 2^450641257 is an apocalyptic number.

It is an amenable number.

450641257 is a deficient number, since it is larger than the sum of its proper divisors (40967399).

450641257 is a wasteful number, since it uses less digits than its factorization.

450641257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40967398.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 450641257 is about 21228.3126272438. The cubic root of 450641257 is about 766.6732605818.

The spelling of 450641257 in words is "four hundred fifty million, six hundred forty-one thousand, two hundred fifty-seven".