4481021 has 4 divisors (see below), whose sum is σ = 4675872. Its totient is φ = 4286172.

The previous prime is 4481003. The next prime is 4481041. The reversal of 4481021 is 1201844.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4481021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4480984 and 4481002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4481041) 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, 97391 + ... + 97436.

It is an arithmetic number, because the mean of its divisors is an integer number (1168968).

Almost surely, 2^4481021 is an apocalyptic number.

It is an amenable number.

4481021 is a deficient number, since it is larger than the sum of its proper divisors (194851).

4481021 is a wasteful number, since it uses less digits than its factorization.

4481021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194850.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 4481021 is about 2116.8422236908. The cubic root of 4481021 is about 164.8639343515.

Adding to 4481021 its reverse (1201844), we get a palindrome (5682865).

The spelling of 4481021 in words is "four million, four hundred eighty-one thousand, twenty-one".