445045 has 4 divisors (see below), whose sum is σ = 534060. Its totient is φ = 356032.

The previous prime is 445033. The next prime is 445069. The reversal of 445045 is 540544.

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 208849 + 236196 = 457^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 445045 - 2¹¹ = 442997 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 44500 + ... + 44509.

It is an arithmetic number, because the mean of its divisors is an integer number (133515).

2⁴⁴⁵⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

445045 is a deficient number, since it is larger than the sum of its proper divisors (89015).

445045 is an equidigital number, since it uses as much as digits as its factorization.

445045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89014.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 445045 is about 667.1169312797. The cubic root of 445045 is about 76.3486405911.

Adding to 445045 its reverse (540544), we get a palindrome (985589).

The spelling of 445045 in words is "four hundred forty-five thousand, forty-five".