5756512561 has 2 divisors, whose sum is σ = 5756512562. Its totient is φ = 5756512560.

The previous prime is 5756512529. The next prime is 5756512589. The reversal of 5756512561 is 1652156575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4001321536 + 1755191025 = 63256^2 + 41895^2 .

It is a cyclic number.

It is not a de Polignac number, because 5756512561 - 2⁵ = 5756512529 is a prime.

It is not a weakly prime, because it can be changed into another prime (5756512591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2878256280 + 2878256281.

It is an arithmetic number, because the mean of its divisors is an integer number (2878256281).

Almost surely, 2^5756512561 is an apocalyptic number.

It is an amenable number.

5756512561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5756512561 is an equidigital number, since it uses as much as digits as its factorization.

5756512561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 315000, while the sum is 43.

The square root of 5756512561 is about 75871.6848435568. The cubic root of 5756512561 is about 1792.2000518426.

The spelling of 5756512561 in words is "five billion, seven hundred fifty-six million, five hundred twelve thousand, five hundred sixty-one".