7446522521 has 2 divisors, whose sum is σ = 7446522522. Its totient is φ = 7446522520.

The previous prime is 7446522511. The next prime is 7446522593. The reversal of 7446522521 is 1252256447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6894977296 + 551545225 = 83036^2 + 23485^2 .

It is a cyclic number.

It is not a de Polignac number, because 7446522521 - 2¹⁰ = 7446521497 is a prime.

It is not a weakly prime, because it can be changed into another prime (7446522511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3723261260 + 3723261261.

It is an arithmetic number, because the mean of its divisors is an integer number (3723261261).

Almost surely, 2^7446522521 is an apocalyptic number.

It is an amenable number.

7446522521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7446522521 is an equidigital number, since it uses as much as digits as its factorization.

7446522521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 38.

The square root of 7446522521 is about 86293.2356618988. The cubic root of 7446522521 is about 1952.7703355160.

Adding to 7446522521 its reverse (1252256447), we get a palindrome (8698778968).

The spelling of 7446522521 in words is "seven billion, four hundred forty-six million, five hundred twenty-two thousand, five hundred twenty-one".