1224544457 has 2 divisors, whose sum is σ = 1224544458. Its totient is φ = 1224544456.

The previous prime is 1224544429. The next prime is 1224544481. The reversal of 1224544457 is 7544454221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677873296 + 546671161 = 26036^2 + 23381^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224544457 - 2⁸ = 1224544201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1224544457.

It is not a weakly prime, because it can be changed into another prime (1224544427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612272228 + 612272229.

It is an arithmetic number, because the mean of its divisors is an integer number (612272229).

Almost surely, 2^1224544457 is an apocalyptic number.

It is an amenable number.

1224544457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224544457 is an equidigital number, since it uses as much as digits as its factorization.

1224544457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 179200, while the sum is 38.

The square root of 1224544457 is about 34993.4916377317. The cubic root of 1224544457 is about 1069.8548313843.

Adding to 1224544457 its reverse (7544454221), we get a palindrome (8768998678).

The spelling of 1224544457 in words is "one billion, two hundred twenty-four million, five hundred forty-four thousand, four hundred fifty-seven".