2756540861 has 2 divisors, whose sum is σ = 2756540862. Its totient is φ = 2756540860.

The previous prime is 2756540833. The next prime is 2756540887. The reversal of 2756540861 is 1680456572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2435916025 + 320624836 = 49355^2 + 17906^2 .

It is a cyclic number.

It is not a de Polignac number, because 2756540861 - 2⁶ = 2756540797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2756540261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378270430 + 1378270431.

It is an arithmetic number, because the mean of its divisors is an integer number (1378270431).

Almost surely, 2^2756540861 is an apocalyptic number.

It is an amenable number.

2756540861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2756540861 is an equidigital number, since it uses as much as digits as its factorization.

2756540861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 2756540861 is about 52502.7700316850. The cubic root of 2756540861 is about 1402.1295585476.

The spelling of 2756540861 in words is "two billion, seven hundred fifty-six million, five hundred forty thousand, eight hundred sixty-one".