445559 has 4 divisors (see below), whose sum is σ = 449616. Its totient is φ = 441504.

The previous prime is 445541. The next prime is 445567. The reversal of 445559 is 955544.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445559 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1859 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (112404).

2⁴⁴⁵⁵⁵⁹ is an apocalyptic number.

445559 is a deficient number, since it is larger than the sum of its proper divisors (4057).

445559 is a wasteful number, since it uses less digits than its factorization.

445559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056.

The product of its digits is 18000, while the sum is 32.

The square root of 445559 is about 667.5020599219. The cubic root of 445559 is about 76.3780219669.

The spelling of 445559 in words is "four hundred forty-five thousand, five hundred fifty-nine".