1049581 has 4 divisors (see below), whose sum is σ = 1130332. Its totient is φ = 968832.

The previous prime is 1049569. The next prime is 1049599. The reversal of 1049581 is 1859401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1859401 = 797 ⋅2333.

It can be written as a sum of positive squares in 2 ways, for example, as 695556 + 354025 = 834^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1049581 - 2⁵ = 1049549 is a prime.

It is a super-2 number, since 2×1049581² = 2203240551122, which contains 22 as substring.

It is a Duffinian number.

1049581 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049281) 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, 40356 + ... + 40381.

It is an arithmetic number, because the mean of its divisors is an integer number (282583).

2^1049581 is an apocalyptic number.

It is an amenable number.

1049581 is a deficient number, since it is larger than the sum of its proper divisors (80751).

1049581 is an equidigital number, since it uses as much as digits as its factorization.

1049581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80750.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1049581 is about 1024.4906051302. The cubic root of 1049581 is about 101.6261141979.

The spelling of 1049581 in words is "one million, forty-nine thousand, five hundred eighty-one".