452209 has 4 divisors (see below), whose sum is σ = 457380. Its totient is φ = 447040.

The previous prime is 452201. The next prime is 452213. The reversal of 452209 is 902254.

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 73984 + 378225 = 272^2 + 615^2 .

It is a cyclic number.

It is not a de Polignac number, because 452209 - 2³ = 452201 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 452209.

It is not an unprimeable number, because it can be changed into a prime (452201) 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, 2452 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (114345).

2⁴⁵²²⁰⁹ is an apocalyptic number.

It is an amenable number.

452209 is a deficient number, since it is larger than the sum of its proper divisors (5171).

452209 is an equidigital number, since it uses as much as digits as its factorization.

452209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 452209 is about 672.4648689709. The cubic root of 452209 is about 76.7561295490.

Adding to 452209 its product of nonzero digits (720), we get a square (452929 = 673²).

The spelling of 452209 in words is "four hundred fifty-two thousand, two hundred nine".