1441581 has 4 divisors (see below), whose sum is σ = 1922112. Its totient is φ = 961052.

The previous prime is 1441579. The next prime is 1441589. The reversal of 1441581 is 1851441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1851441 = 3 ⋅617147.

It is a cyclic number.

It is not a de Polignac number, because 1441581 - 2¹ = 1441579 is a prime.

It is a super-2 number, since 2×1441581² = 4156311559122, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1441589) 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, 240261 + ... + 240266.

It is an arithmetic number, because the mean of its divisors is an integer number (480528).

2^1441581 is an apocalyptic number.

It is an amenable number.

1441581 is a deficient number, since it is larger than the sum of its proper divisors (480531).

1441581 is an equidigital number, since it uses as much as digits as its factorization.

1441581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480530.

The product of its digits is 640, while the sum is 24.

The square root of 1441581 is about 1200.6585692860. The cubic root of 1441581 is about 112.9656355159.

The spelling of 1441581 in words is "one million, four hundred forty-one thousand, five hundred eighty-one".