445405565 has 8 divisors (see below), whose sum is σ = 583076448. Its totient is φ = 323931280.

The previous prime is 445405547. The next prime is 445405589. The reversal of 445405565 is 565504544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 445405565 - 2¹⁰ = 445404541 is a prime.

It is a super-2 number, since 2×445405565² = 396772234665938450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4049087 + ... + 4049196.

It is an arithmetic number, because the mean of its divisors is an integer number (72884556).

Almost surely, 2^445405565 is an apocalyptic number.

It is an amenable number.

445405565 is a deficient number, since it is larger than the sum of its proper divisors (137670883).

445405565 is a wasteful number, since it uses less digits than its factorization.

445405565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8098299.

The product of its (nonzero) digits is 240000, while the sum is 38.

The square root of 445405565 is about 21104.6337329033. The cubic root of 445405565 is about 763.6925365016.

It can be divided in two parts, 44540 and 5565, that added together give a palindrome (50105).

The spelling of 445405565 in words is "four hundred forty-five million, four hundred five thousand, five hundred sixty-five".