1004581 has 4 divisors (see below), whose sum is σ = 1063692. Its totient is φ = 945472.

The previous prime is 1004567. The next prime is 1004599. The reversal of 1004581 is 1854001.

1004581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1854001 = 19 ⋅97579.

It can be written as a sum of positive squares in 2 ways, for example, as 893025 + 111556 = 945^2 + 334^2 .

It is not a de Polignac number, because 1004581 - 2⁷ = 1004453 is a prime.

It is a super-2 number, since 2×1004581² = 2018365971122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29530 + ... + 29563.

It is an arithmetic number, because the mean of its divisors is an integer number (265923).

2^1004581 is an apocalyptic number.

It is an amenable number.

1004581 is a deficient number, since it is larger than the sum of its proper divisors (59111).

1004581 is an equidigital number, since it uses as much as digits as its factorization.

1004581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59110.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1004581 is about 1002.2878827962. The cubic root of 1004581 is about 100.1524674187.

Adding to 1004581 its reverse (1854001), we get a palindrome (2858582).

The spelling of 1004581 in words is "one million, four thousand, five hundred eighty-one".