2556675761 has 2 divisors, whose sum is σ = 2556675762. Its totient is φ = 2556675760.

The previous prime is 2556675727. The next prime is 2556675787. The reversal of 2556675761 is 1675766552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2102772736 + 453903025 = 45856^2 + 21305^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556675761 - 2¹⁸ = 2556413617 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556675661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278337880 + 1278337881.

It is an arithmetic number, because the mean of its divisors is an integer number (1278337881).

Almost surely, 2^2556675761 is an apocalyptic number.

It is an amenable number.

2556675761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556675761 is an equidigital number, since it uses as much as digits as its factorization.

2556675761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646000, while the sum is 50.

The square root of 2556675761 is about 50563.5813703895. The cubic root of 2556675761 is about 1367.3883791174.

The spelling of 2556675761 in words is "two billion, five hundred fifty-six million, six hundred seventy-five thousand, seven hundred sixty-one".