7045254421 has 2 divisors, whose sum is σ = 7045254422. Its totient is φ = 7045254420.

The previous prime is 7045254373. The next prime is 7045254443. The reversal of 7045254421 is 1244525407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5028795396 + 2016459025 = 70914^2 + 44905^2 .

It is an emirp because it is prime and its reverse (1244525407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7045254421 - 2¹⁵ = 7045221653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7045224421) 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 as a sum of consecutive naturals, namely, 3522627210 + 3522627211.

It is an arithmetic number, because the mean of its divisors is an integer number (3522627211).

Almost surely, 2^7045254421 is an apocalyptic number.

It is an amenable number.

7045254421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7045254421 is an equidigital number, since it uses as much as digits as its factorization.

7045254421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44800, while the sum is 34.

The square root of 7045254421 is about 83936.0138498368. The cubic root of 7045254421 is about 1917.0446450253.

Adding to 7045254421 its reverse (1244525407), we get a palindrome (8289779828).

The spelling of 7045254421 in words is "seven billion, forty-five million, two hundred fifty-four thousand, four hundred twenty-one".