452005 has 4 divisors (see below), whose sum is σ = 542412. Its totient is φ = 361600.

The previous prime is 451987. The next prime is 452009. The reversal of 452005 is 500254.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 136161 + 315844 = 369^2 + 562^2 .

It is a de Polignac number, because none of the positive numbers 2^k-452005 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 452005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452009) 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, 45196 + ... + 45205.

It is an arithmetic number, because the mean of its divisors is an integer number (135603).

2⁴⁵²⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

452005 is a deficient number, since it is larger than the sum of its proper divisors (90407).

452005 is an equidigital number, since it uses as much as digits as its factorization.

452005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90406.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 452005 is about 672.3131710743. The cubic root of 452005 is about 76.7445857675.

Adding to 452005 its reverse (500254), we get a palindrome (952259).

The spelling of 452005 in words is "four hundred fifty-two thousand, five".