451423 has 4 divisors (see below), whose sum is σ = 515920. Its totient is φ = 386928.

The previous prime is 451411. The next prime is 451439. The reversal of 451423 is 324154.

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 451423 - 2¹³ = 443231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 451423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32238 + ... + 32251.

It is an arithmetic number, because the mean of its divisors is an integer number (128980).

2⁴⁵¹⁴²³ is an apocalyptic number.

451423 is a deficient number, since it is larger than the sum of its proper divisors (64497).

451423 is an equidigital number, since it uses as much as digits as its factorization.

451423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64496.

The product of its digits is 480, while the sum is 19.

The square root of 451423 is about 671.8801976543. The cubic root of 451423 is about 76.7116329367.

Adding to 451423 its reverse (324154), we get a palindrome (775577).

The spelling of 451423 in words is "four hundred fifty-one thousand, four hundred twenty-three".