451992 has 32 divisors (see below), whose sum is σ = 1162800. Its totient is φ = 146304.

The previous prime is 451987. The next prime is 452009. The reversal of 451992 is 299154.

It is a happy number.

451992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 634 + ... + 1142.

2⁴⁵¹⁹⁹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581400).

451992 is an abundant number, since it is smaller than the sum of its proper divisors (710808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451992 is a wasteful number, since it uses less digits than its factorization.

451992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 551 counting only the distinct ones).

The product of its digits is 3240, while the sum is 30.

The square root of 451992 is about 672.3035028914. The cubic root of 451992 is about 76.7438500167.

The spelling of 451992 in words is "four hundred fifty-one thousand, nine hundred ninety-two".