1226079521 has 2 divisors, whose sum is σ = 1226079522. Its totient is φ = 1226079520.

The previous prime is 1226079497. The next prime is 1226079577. The reversal of 1226079521 is 1259706221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1225000000 + 1079521 = 35000^2 + 1039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226079521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226079121) 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, 613039760 + 613039761.

It is an arithmetic number, because the mean of its divisors is an integer number (613039761).

Almost surely, 2^1226079521 is an apocalyptic number.

It is an amenable number.

1226079521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226079521 is an equidigital number, since it uses as much as digits as its factorization.

1226079521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1226079521 is about 35015.4183325003. The cubic root of 1226079521 is about 1070.3016941219.

The spelling of 1226079521 in words is "one billion, two hundred twenty-six million, seventy-nine thousand, five hundred twenty-one".