7430535221 has 2 divisors, whose sum is σ = 7430535222. Its totient is φ = 7430535220.

The previous prime is 7430535193. The next prime is 7430535347. The reversal of 7430535221 is 1225350347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5269308100 + 2161227121 = 72590^2 + 46489^2 .

It is a cyclic number.

It is not a de Polignac number, because 7430535221 - 2⁶ = 7430535157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7430535521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3715267610 + 3715267611.

It is an arithmetic number, because the mean of its divisors is an integer number (3715267611).

Almost surely, 2^7430535221 is an apocalyptic number.

It is an amenable number.

7430535221 is a deficient number, since it is larger than the sum of its proper divisors (1).

7430535221 is an equidigital number, since it uses as much as digits as its factorization.

7430535221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 7430535221 is about 86200.5523242166. The cubic root of 7430535221 is about 1951.3718351189.

Adding to 7430535221 its reverse (1225350347), we get a palindrome (8655885568).

The spelling of 7430535221 in words is "seven billion, four hundred thirty million, five hundred thirty-five thousand, two hundred twenty-one".