445105 has 4 divisors (see below), whose sum is σ = 534132. Its totient is φ = 356080.

The previous prime is 445103. The next prime is 445141. The reversal of 445105 is 501544.

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 237169 + 207936 = 487^2 + 456^2 .

It is not a de Polignac number, because 445105 - 2¹ = 445103 is a prime.

It is a super-2 number, since 2×445105² = 396236922050, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (445103) 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, 44506 + ... + 44515.

It is an arithmetic number, because the mean of its divisors is an integer number (133533).

2⁴⁴⁵¹⁰⁵ is an apocalyptic number.

It is an amenable number.

445105 is a deficient number, since it is larger than the sum of its proper divisors (89027).

445105 is an equidigital number, since it uses as much as digits as its factorization.

445105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89026.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 445105 is about 667.1618993917. The cubic root of 445105 is about 76.3520714896.

Adding to 445105 its reverse (501544), we get a palindrome (946649).

The spelling of 445105 in words is "four hundred forty-five thousand, one hundred five".