7224055649 has 2 divisors, whose sum is σ = 7224055650. Its totient is φ = 7224055648.

The previous prime is 7224055637. The next prime is 7224055669. The reversal of 7224055649 is 9465504227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4474941025 + 2749114624 = 66895^2 + 52432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7224055649 is a prime.

It is a super-2 number, since 2×7224055649² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7224055669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612027824 + 3612027825.

It is an arithmetic number, because the mean of its divisors is an integer number (3612027825).

Almost surely, 2^7224055649 is an apocalyptic number.

It is an amenable number.

7224055649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7224055649 is an equidigital number, since it uses as much as digits as its factorization.

7224055649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 44.

The square root of 7224055649 is about 84994.4448125876. Note that the first 3 decimals coincide. The cubic root of 7224055649 is about 1933.1268854830.

The spelling of 7224055649 in words is "seven billion, two hundred twenty-four million, fifty-five thousand, six hundred forty-nine".