2551244305 has 16 divisors (see below), whose sum is σ = 3140240400. Its totient is φ = 1989015808.

The previous prime is 2551244303. The next prime is 2551244317. The reversal of 2551244305 is 5034421552.

It can be written as a sum of positive squares in 8 ways, for example, as 198218241 + 2353026064 = 14079^2 + 48508^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551244305 - 2¹ = 2551244303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2551244303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7179 + ... + 71791.

It is an arithmetic number, because the mean of its divisors is an integer number (196265025).

Almost surely, 2^2551244305 is an apocalyptic number.

It is an amenable number.

2551244305 is a deficient number, since it is larger than the sum of its proper divisors (588996095).

2551244305 is a wasteful number, since it uses less digits than its factorization.

2551244305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64820.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 2551244305 is about 50509.8436445808. The cubic root of 2551244305 is about 1366.4193896924.

Adding to 2551244305 its reverse (5034421552), we get a palindrome (7585665857).

The spelling of 2551244305 in words is "two billion, five hundred fifty-one million, two hundred forty-four thousand, three hundred five".