450256191 has 16 divisors (see below), whose sum is σ = 748478208. Its totient is φ = 233899200.

The previous prime is 450256181. The next prime is 450256229. The reversal of 450256191 is 191652054.

It is not a de Polignac number, because 450256191 - 2⁶ = 450256127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450256111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 974350 + ... + 974811.

It is an arithmetic number, because the mean of its divisors is an integer number (46779888).

Almost surely, 2^450256191 is an apocalyptic number.

450256191 is a deficient number, since it is larger than the sum of its proper divisors (298222017).

450256191 is a wasteful number, since it uses less digits than its factorization.

450256191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949182.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 450256191 is about 21219.2410561735. The cubic root of 450256191 is about 766.4548281976.

The spelling of 450256191 in words is "four hundred fifty million, two hundred fifty-six thousand, one hundred ninety-one".