1223552513 has 2 divisors, whose sum is σ = 1223552514. Its totient is φ = 1223552512.

The previous prime is 1223552507. The next prime is 1223552521. The reversal of 1223552513 is 3152553221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756690064 + 466862449 = 27508^2 + 21607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223552513 - 2¹⁶ = 1223486977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223552563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611776256 + 611776257.

It is an arithmetic number, because the mean of its divisors is an integer number (611776257).

Almost surely, 2^1223552513 is an apocalyptic number.

It is an amenable number.

1223552513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223552513 is an equidigital number, since it uses as much as digits as its factorization.

1223552513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 29.

The square root of 1223552513 is about 34979.3155021650. The cubic root of 1223552513 is about 1069.5658741982.

The spelling of 1223552513 in words is "one billion, two hundred twenty-three million, five hundred fifty-two thousand, five hundred thirteen".