1224533509 has 2 divisors, whose sum is σ = 1224533510. Its totient is φ = 1224533508.

The previous prime is 1224533503. The next prime is 1224533543. The reversal of 1224533509 is 9053354221.

It is an a-pointer prime, because the next prime (1224533543) can be obtained adding 1224533509 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1058200900 + 166332609 = 32530^2 + 12897^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224533509 - 2¹⁵ = 1224500741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224533503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612266754 + 612266755.

It is an arithmetic number, because the mean of its divisors is an integer number (612266755).

Almost surely, 2^1224533509 is an apocalyptic number.

It is an amenable number.

1224533509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224533509 is an equidigital number, since it uses as much as digits as its factorization.

1224533509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 1224533509 is about 34993.3352082936. The cubic root of 1224533509 is about 1069.8516430407.

It can be divided in two parts, 12245 and 33509, that added together give a palindrome (45754).

The spelling of 1224533509 in words is "one billion, two hundred twenty-four million, five hundred thirty-three thousand, five hundred nine".