7277221241 has 4 divisors (see below), whose sum is σ = 7454714484. Its totient is φ = 7099728000.

The previous prime is 7277221219. The next prime is 7277221261. The reversal of 7277221241 is 1421227727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 484000000 + 6793221241 = 22000^2 + 82421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7277221241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7277221261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88746560 + ... + 88746641.

It is an arithmetic number, because the mean of its divisors is an integer number (1863678621).

Almost surely, 2^7277221241 is an apocalyptic number.

It is an amenable number.

7277221241 is a deficient number, since it is larger than the sum of its proper divisors (177493243).

7277221241 is a wasteful number, since it uses less digits than its factorization.

7277221241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177493242.

The product of its digits is 21952, while the sum is 35.

The square root of 7277221241 is about 85306.6306977365. The cubic root of 7277221241 is about 1937.8575953545.

Adding to 7277221241 its reverse (1421227727), we get a palindrome (8698448968).

The spelling of 7277221241 in words is "seven billion, two hundred seventy-seven million, two hundred twenty-one thousand, two hundred forty-one".