1226353553 has 2 divisors, whose sum is σ = 1226353554. Its totient is φ = 1226353552.

The previous prime is 1226353547. The next prime is 1226353561. The reversal of 1226353553 is 3553536221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796537729 + 429815824 = 28223^2 + 20732^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226353553 - 2¹⁴ = 1226337169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1226353153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613176776 + 613176777.

It is an arithmetic number, because the mean of its divisors is an integer number (613176777).

Almost surely, 2^1226353553 is an apocalyptic number.

It is an amenable number.

1226353553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226353553 is an equidigital number, since it uses as much as digits as its factorization.

1226353553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 35.

The square root of 1226353553 is about 35019.3311329614. The cubic root of 1226353553 is about 1070.3814265973.

Adding to 1226353553 its reverse (3553536221), we get a palindrome (4779889774).

The spelling of 1226353553 in words is "one billion, two hundred twenty-six million, three hundred fifty-three thousand, five hundred fifty-three".