451804 has 6 divisors (see below), whose sum is σ = 790664. Its totient is φ = 225900.

The previous prime is 451799. The next prime is 451823. The reversal of 451804 is 408154.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 56472 + ... + 56479.

2⁴⁵¹⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

451804 is a deficient number, since it is larger than the sum of its proper divisors (338860).

451804 is a wasteful number, since it uses less digits than its factorization.

451804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112955 (or 112953 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 451804 is about 672.1636705446. The cubic root of 451804 is about 76.7332083500.

Adding to 451804 its reverse (408154), we get a palindrome (859958).

It can be divided in two parts, 45 and 1804, that added together give a square (1849 = 43²).

The spelling of 451804 in words is "four hundred fifty-one thousand, eight hundred four".