451043 has 4 divisors (see below), whose sum is σ = 452640. Its totient is φ = 449448.

The previous prime is 451039. The next prime is 451051. The reversal of 451043 is 340154.

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 451043 - 2² = 451039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248 + ... + 981.

It is an arithmetic number, because the mean of its divisors is an integer number (113160).

2⁴⁵¹⁰⁴³ is an apocalyptic number.

451043 is a deficient number, since it is larger than the sum of its proper divisors (1597).

451043 is a wasteful number, since it uses less digits than its factorization.

451043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 451043 is about 671.5973496076. The cubic root of 451043 is about 76.6901020563.

Adding to 451043 its reverse (340154), we get a palindrome (791197).

Subtracting from 451043 its reverse (340154), we obtain a square (110889 = 333²).

The spelling of 451043 in words is "four hundred fifty-one thousand, forty-three".