7247222251 has 2 divisors, whose sum is σ = 7247222252. Its totient is φ = 7247222250.

The previous prime is 7247222249. The next prime is 7247222261. The reversal of 7247222251 is 1522227427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7247222251 - 2¹ = 7247222249 is a prime.

Together with 7247222249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7247222201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3623611125 + 3623611126.

It is an arithmetic number, because the mean of its divisors is an integer number (3623611126).

Almost surely, 2^7247222251 is an apocalyptic number.

7247222251 is a deficient number, since it is larger than the sum of its proper divisors (1).

7247222251 is an equidigital number, since it uses as much as digits as its factorization.

7247222251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 34.

The square root of 7247222251 is about 85130.6187631689. The cubic root of 7247222251 is about 1935.1911088836.

Adding to 7247222251 its reverse (1522227427), we get a palindrome (8769449678).

The spelling of 7247222251 in words is "seven billion, two hundred forty-seven million, two hundred twenty-two thousand, two hundred fifty-one".