1224540061 has 2 divisors, whose sum is σ = 1224540062. Its totient is φ = 1224540060.

The previous prime is 1224540019. The next prime is 1224540089. The reversal of 1224540061 is 1600454221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 900360036 + 324180025 = 30006^2 + 18005^2 .

It is an emirp because it is prime and its reverse (1600454221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1224540061 - 2⁹ = 1224539549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224540011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612270030 + 612270031.

It is an arithmetic number, because the mean of its divisors is an integer number (612270031).

Almost surely, 2^1224540061 is an apocalyptic number.

It is an amenable number.

1224540061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224540061 is an equidigital number, since it uses as much as digits as its factorization.

1224540061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1224540061 is about 34993.4288259953. The cubic root of 1224540061 is about 1069.8535511566.

Adding to 1224540061 its reverse (1600454221), we get a palindrome (2824994282).

The spelling of 1224540061 in words is "one billion, two hundred twenty-four million, five hundred forty thousand, sixty-one".