7045221653 has 2 divisors, whose sum is σ = 7045221654. Its totient is φ = 7045221652.

The previous prime is 7045221637. The next prime is 7045221671. The reversal of 7045221653 is 3561225407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6327088849 + 718132804 = 79543^2 + 26798^2 .

It is an emirp because it is prime and its reverse (3561225407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7045221653 - 2⁴ = 7045221637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7045224653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3522610826 + 3522610827.

It is an arithmetic number, because the mean of its divisors is an integer number (3522610827).

Almost surely, 2^7045221653 is an apocalyptic number.

It is an amenable number.

7045221653 is a deficient number, since it is larger than the sum of its proper divisors (1).

7045221653 is an equidigital number, since it uses as much as digits as its factorization.

7045221653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 7045221653 is about 83935.8186533020. The cubic root of 7045221653 is about 1917.0416729152.

The spelling of 7045221653 in words is "seven billion, forty-five million, two hundred twenty-one thousand, six hundred fifty-three".