451997 has 8 divisors (see below), whose sum is σ = 556416. Its totient is φ = 357552.

The previous prime is 451987. The next prime is 452009. The reversal of 451997 is 799154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 451997 - 2⁶ = 451933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2393 + ... + 2574.

It is an arithmetic number, because the mean of its divisors is an integer number (69552).

2⁴⁵¹⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

451997 is a deficient number, since it is larger than the sum of its proper divisors (104419).

451997 is a wasteful number, since it uses less digits than its factorization.

451997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987.

The product of its digits is 11340, while the sum is 35.

The square root of 451997 is about 672.3072214397. The cubic root of 451997 is about 76.7441329994.

The spelling of 451997 in words is "four hundred fifty-one thousand, nine hundred ninety-seven".