450720257 has 16 divisors (see below), whose sum is σ = 498379392. Its totient is φ = 404964480.

The previous prime is 450720251. The next prime is 450720287. The reversal of 450720257 is 752027054.

It is a cyclic number.

It is not a de Polignac number, because 450720257 - 2¹⁴ = 450703873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450720251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344198 + ... + 345504.

It is an arithmetic number, because the mean of its divisors is an integer number (31148712).

Almost surely, 2^450720257 is an apocalyptic number.

It is an amenable number.

450720257 is a deficient number, since it is larger than the sum of its proper divisors (47659135).

450720257 is a wasteful number, since it uses less digits than its factorization.

450720257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008.

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 450720257 is about 21230.1732682520. The cubic root of 450720257 is about 766.7180587058.

The spelling of 450720257 in words is "four hundred fifty million, seven hundred twenty thousand, two hundred fifty-seven".