1045445 has 4 divisors (see below), whose sum is σ = 1254540. Its totient is φ = 836352.

The previous prime is 1045427. The next prime is 1045469. The reversal of 1045445 is 5445401.

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 407044 + 638401 = 638^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045445 - 2¹² = 1041349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1045445.

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, 104540 + ... + 104549.

It is an arithmetic number, because the mean of its divisors is an integer number (313635).

2^1045445 is an apocalyptic number.

It is an amenable number.

1045445 is a deficient number, since it is larger than the sum of its proper divisors (209095).

1045445 is an equidigital number, since it uses as much as digits as its factorization.

1045445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209094.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1045445 is about 1022.4700484611. The cubic root of 1045445 is about 101.4924484987.

The spelling of 1045445 in words is "one million, forty-five thousand, four hundred forty-five".