445775 has 12 divisors (see below), whose sum is σ = 603384. Its totient is φ = 324000.

The previous prime is 445771. The next prime is 445789. The reversal of 445775 is 577544.

It is not a de Polignac number, because 445775 - 2² = 445771 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536 + ... + 1085.

It is an arithmetic number, because the mean of its divisors is an integer number (50282).

2⁴⁴⁵⁷⁷⁵ is an apocalyptic number.

445775 is a deficient number, since it is larger than the sum of its proper divisors (157609).

445775 is a wasteful number, since it uses less digits than its factorization.

445775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642 (or 1637 counting only the distinct ones).

The product of its digits is 19600, while the sum is 32.

The square root of 445775 is about 667.6638375710. The cubic root of 445775 is about 76.3903622611.

Subtracting 445775 from its reverse (577544), we obtain a square (131769 = 363²).

The spelling of 445775 in words is "four hundred forty-five thousand, seven hundred seventy-five".