445085 has 4 divisors (see below), whose sum is σ = 534108. Its totient is φ = 356064.

The previous prime is 445069. The next prime is 445087. The reversal of 445085 is 580544.

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 151321 + 293764 = 389^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 445085 - 2⁴ = 445069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445087) 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, 44504 + ... + 44513.

It is an arithmetic number, because the mean of its divisors is an integer number (133527).

2⁴⁴⁵⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

445085 is a deficient number, since it is larger than the sum of its proper divisors (89023).

445085 is an equidigital number, since it uses as much as digits as its factorization.

445085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89022.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 445085 is about 667.1469103578. The cubic root of 445085 is about 76.3509278910.

The spelling of 445085 in words is "four hundred forty-five thousand, eighty-five".