2747365561 has 2 divisors, whose sum is σ = 2747365562. Its totient is φ = 2747365560.

The previous prime is 2747365549. The next prime is 2747365609. The reversal of 2747365561 is 1655637472.

2747365561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2728495225 + 18870336 = 52235^2 + 4344^2 .

It is a cyclic number.

It is not a de Polignac number, because 2747365561 - 2²³ = 2738976953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2747365501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1373682780 + 1373682781.

It is an arithmetic number, because the mean of its divisors is an integer number (1373682781).

Almost surely, 2^2747365561 is an apocalyptic number.

It is an amenable number.

2747365561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2747365561 is an equidigital number, since it uses as much as digits as its factorization.

2747365561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 46.

The square root of 2747365561 is about 52415.3179996077. The cubic root of 2747365561 is about 1400.5721404702.

The spelling of 2747365561 in words is "two billion, seven hundred forty-seven million, three hundred sixty-five thousand, five hundred sixty-one".