1045217 has 4 divisors (see below), whose sum is σ = 1049796. Its totient is φ = 1040640.

The previous prime is 1045199. The next prime is 1045223. The reversal of 1045217 is 7125401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7125401 = 43 ⋅165707.

It can be written as a sum of positive squares in 2 ways, for example, as 312481 + 732736 = 559^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045217 - 2⁶ = 1045153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1045237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1928 + ... + 2409.

It is an arithmetic number, because the mean of its divisors is an integer number (262449).

2^1045217 is an apocalyptic number.

It is an amenable number.

1045217 is a deficient number, since it is larger than the sum of its proper divisors (4579).

1045217 is an equidigital number, since it uses as much as digits as its factorization.

1045217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1045217 is about 1022.3585476730. The cubic root of 1045217 is about 101.4850698351.

The spelling of 1045217 in words is "one million, forty-five thousand, two hundred seventeen".