450591 has 4 divisors (see below), whose sum is σ = 600792. Its totient is φ = 300392.

The previous prime is 450587. The next prime is 450599. The reversal of 450591 is 195054.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 450591 - 2² = 450587 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 450591.

It is not an unprimeable number, because it can be changed into a prime (450599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75096 + ... + 75101.

It is an arithmetic number, because the mean of its divisors is an integer number (150198).

2⁴⁵⁰⁵⁹¹ is an apocalyptic number.

450591 is a deficient number, since it is larger than the sum of its proper divisors (150201).

450591 is a wasteful number, since it uses less digits than its factorization.

450591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150200.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 450591 is about 671.2607541038. The cubic root of 450591 is about 76.6644758878.

The spelling of 450591 in words is "four hundred fifty thousand, five hundred ninety-one".