2551336745 has 16 divisors (see below), whose sum is σ = 3100427280. Its totient is φ = 2015253504.

The previous prime is 2551336721. The next prime is 2551336747. The reversal of 2551336745 is 5476331552.

2551336745 = 35716² + 35717².

It can be written as a sum of positive squares in 8 ways, for example, as 270701209 + 2280635536 = 16453^2 + 47756^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551336745 - 2⁶ = 2551336681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2551336747) 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 in 15 ways as a sum of consecutive naturals, for example, 340277 + ... + 347693.

It is an arithmetic number, because the mean of its divisors is an integer number (193776705).

Almost surely, 2^2551336745 is an apocalyptic number.

2551336745 is the 35717-th centered square number.

It is an amenable number.

2551336745 is a deficient number, since it is larger than the sum of its proper divisors (549090535).

2551336745 is an equidigital number, since it uses as much as digits as its factorization.

2551336745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284.

The product of its digits is 378000, while the sum is 41.

The square root of 2551336745 is about 50510.7587054481. The cubic root of 2551336745 is about 1366.4358927875.

The spelling of 2551336745 in words is "two billion, five hundred fifty-one million, three hundred thirty-six thousand, seven hundred forty-five".