452581 has 4 divisors (see below), whose sum is σ = 457164. Its totient is φ = 448000.

The previous prime is 452579. The next prime is 452587. The reversal of 452581 is 185254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 185254 = 2 ⋅92627.

It can be written as a sum of positive squares in 2 ways, for example, as 401956 + 50625 = 634^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 452581 - 2¹ = 452579 is a prime.

It is a super-2 number, since 2×452581² = 409659123122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

452581 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140 + ... + 2341.

It is an arithmetic number, because the mean of its divisors is an integer number (114291).

2⁴⁵²⁵⁸¹ is an apocalyptic number.

It is an amenable number.

452581 is a deficient number, since it is larger than the sum of its proper divisors (4583).

452581 is a wasteful number, since it uses less digits than its factorization.

452581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582.

The product of its digits is 1600, while the sum is 25.

The square root of 452581 is about 672.7414064854. The cubic root of 452581 is about 76.7771710395. Note that the first 3 decimals are identical.

The spelling of 452581 in words is "four hundred fifty-two thousand, five hundred eighty-one".