450891 has 24 divisors (see below), whose sum is σ = 789984. Its totient is φ = 241920.

The previous prime is 450887. The next prime is 450893. The reversal of 450891 is 198054.

It is not a de Polignac number, because 450891 - 2² = 450887 is a prime.

450891 is a modest number, since divided by 891 gives 45 as remainder.

It is not an unprimeable number, because it can be changed into a prime (450893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 861 + ... + 1281.

It is an arithmetic number, because the mean of its divisors is an integer number (32916).

2⁴⁵⁰⁸⁹¹ is an apocalyptic number.

450891 is a deficient number, since it is larger than the sum of its proper divisors (339093).

450891 is a wasteful number, since it uses less digits than its factorization.

450891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 450891 is about 671.4841770288. The cubic root of 450891 is about 76.6814863181.

The spelling of 450891 in words is "four hundred fifty thousand, eight hundred ninety-one".