1445105 has 4 divisors (see below), whose sum is σ = 1734132. Its totient is φ = 1156080.

The previous prime is 1445077. The next prime is 1445107. The reversal of 1445105 is 5015441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5015441 = 83 ⋅60427.

It can be written as a sum of positive squares in 2 ways, for example, as 461041 + 984064 = 679^2 + 992^2 .

It is not a de Polignac number, because 1445105 - 2¹⁰ = 1444081 is a prime.

It is a super-4 number, since 4×1445105⁴ (a number of 26 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1445107) 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, 144506 + ... + 144515.

It is an arithmetic number, because the mean of its divisors is an integer number (433533).

2^1445105 is an apocalyptic number.

It is an amenable number.

1445105 is a deficient number, since it is larger than the sum of its proper divisors (289027).

1445105 is an equidigital number, since it uses as much as digits as its factorization.

1445105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289026.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1445105 is about 1202.1252014661. The cubic root of 1445105 is about 113.0576102198.

The spelling of 1445105 in words is "one million, four hundred forty-five thousand, one hundred five".