7221049 has 4 divisors (see below), whose sum is σ = 7877520. Its totient is φ = 6564580.

The previous prime is 7221041. The next prime is 7221077. The reversal of 7221049 is 9401227.

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 not a de Polignac number, because 7221049 - 2³ = 7221041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221041) 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, 328219 + ... + 328240.

It is an arithmetic number, because the mean of its divisors is an integer number (1969380).

Almost surely, 2^7221049 is an apocalyptic number.

It is an amenable number.

7221049 is a deficient number, since it is larger than the sum of its proper divisors (656471).

7221049 is a wasteful number, since it uses less digits than its factorization.

7221049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656470.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 7221049 is about 2687.2009601070. The cubic root of 7221049 is about 193.2858659395.

It can be divided in two parts, 722 and 1049, that added together give a palindrome (1771).

The spelling of 7221049 in words is "seven million, two hundred twenty-one thousand, forty-nine".