1045001 has 4 divisors (see below), whose sum is σ = 1064772. Its totient is φ = 1025232.

The previous prime is 1044997. The next prime is 1045003. The reversal of 1045001 is 1005401.

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 366025 + 678976 = 605^2 + 824^2 .

It is not a de Polignac number, because 1045001 - 2² = 1044997 is a prime.

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 (1045003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9806 + ... + 9911.

It is an arithmetic number, because the mean of its divisors is an integer number (266193).

2^1045001 is an apocalyptic number.

It is an amenable number.

1045001 is a deficient number, since it is larger than the sum of its proper divisors (19771).

1045001 is an equidigital number, since it uses as much as digits as its factorization.

1045001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19770.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1045001 is about 1022.2529041289. The cubic root of 1045001 is about 101.4780785325.

The spelling of 1045001 in words is "one million, forty-five thousand, one".