7221441 has 4 divisors (see below), whose sum is σ = 9628592. Its totient is φ = 4814292.

The previous prime is 7221439. The next prime is 7221449. The reversal of 7221441 is 1441227.

It is a happy number.

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: 1441227 = 3 ⋅480409.

It is not a de Polignac number, because 7221441 - 2¹ = 7221439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221449) 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, 1203571 + ... + 1203576.

It is an arithmetic number, because the mean of its divisors is an integer number (2407148).

Almost surely, 2^7221441 is an apocalyptic number.

It is an amenable number.

7221441 is a deficient number, since it is larger than the sum of its proper divisors (2407151).

7221441 is a wasteful number, since it uses less digits than its factorization.

7221441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407150.

The product of its digits is 448, while the sum is 21.

The square root of 7221441 is about 2687.2738974656. The cubic root of 7221441 is about 193.2893634318.

Adding to 7221441 its reverse (1441227), we get a palindrome (8662668).

The spelling of 7221441 in words is "seven million, two hundred twenty-one thousand, four hundred forty-one".