1004455 has 4 divisors (see below), whose sum is σ = 1205352. Its totient is φ = 803560.

The previous prime is 1004453. The next prime is 1004461. The reversal of 1004455 is 5544001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1004455 - 2¹ = 1004453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004453) 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, 100441 + ... + 100450.

It is an arithmetic number, because the mean of its divisors is an integer number (301338).

2^1004455 is an apocalyptic number.

1004455 is a deficient number, since it is larger than the sum of its proper divisors (200897).

1004455 is an equidigital number, since it uses as much as digits as its factorization.

1004455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200896.

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

The square root of 1004455 is about 1002.2250246327. The cubic root of 1004455 is about 100.1482800217.

Adding to 1004455 its reverse (5544001), we get a palindrome (6548456).

The spelling of 1004455 in words is "one million, four thousand, four hundred fifty-five".