2760155561 has 2 divisors, whose sum is σ = 2760155562. Its totient is φ = 2760155560.

The previous prime is 2760155537. The next prime is 2760155599. The reversal of 2760155561 is 1655510672.

It is an a-pointer prime, because the next prime (2760155599) can be obtained adding 2760155561 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2621952025 + 138203536 = 51205^2 + 11756^2 .

It is a cyclic number.

It is not a de Polignac number, because 2760155561 - 2¹⁸ = 2759893417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2760155521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1380077780 + 1380077781.

It is an arithmetic number, because the mean of its divisors is an integer number (1380077781).

Almost surely, 2^2760155561 is an apocalyptic number.

It is an amenable number.

2760155561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2760155561 is an equidigital number, since it uses as much as digits as its factorization.

2760155561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 2760155561 is about 52537.1826519085. The cubic root of 2760155561 is about 1402.7421698129.

The spelling of 2760155561 in words is "two billion, seven hundred sixty million, one hundred fifty-five thousand, five hundred sixty-one".