1445005 has 4 divisors (see below), whose sum is σ = 1734012. Its totient is φ = 1156000.

The previous prime is 1444999. The next prime is 1445033. The reversal of 1445005 is 5005441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5005441 = 7 ⋅715063.

It can be written as a sum of positive squares in 2 ways, for example, as 636804 + 808201 = 798^2 + 899^2 .

It is not a de Polignac number, because 1445005 - 2⁵ = 1444973 is a prime.

It is a Duffinian number.

1445005 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144496 + ... + 144505.

It is an arithmetic number, because the mean of its divisors is an integer number (433503).

2^1445005 is an apocalyptic number.

It is an amenable number.

1445005 is a deficient number, since it is larger than the sum of its proper divisors (289007).

1445005 is an equidigital number, since it uses as much as digits as its factorization.

1445005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289006.

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

The square root of 1445005 is about 1202.0836077412. The cubic root of 1445005 is about 113.0550023304.

It can be divided in two parts, 144500 and 5, that multiplied together give a square (722500 = 850²).

The spelling of 1445005 in words is "one million, four hundred forty-five thousand, five".