4442581 has 16 divisors (see below), whose sum is σ = 5338368. Its totient is φ = 3643200.

The previous prime is 4442573. The next prime is 4442609. The reversal of 4442581 is 1852444.

It is not a de Polignac number, because 4442581 - 2³ = 4442573 is a prime.

It is a super-2 number, since 2×4442581² = 39473051883122, 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 (4442521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6391 + ... + 7051.

It is an arithmetic number, because the mean of its divisors is an integer number (333648).

Almost surely, 2^4442581 is an apocalyptic number.

It is an amenable number.

4442581 is a deficient number, since it is larger than the sum of its proper divisors (895787).

4442581 is a wasteful number, since it uses less digits than its factorization.

4442581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732.

The product of its digits is 5120, while the sum is 28.

The square root of 4442581 is about 2107.7431057887. The cubic root of 4442581 is about 164.3911568306.

It can be divided in two parts, 444 and 2581, that added together give a square (3025 = 55²).

The spelling of 4442581 in words is "four million, four hundred forty-two thousand, five hundred eighty-one".