2750000161 has 2 divisors, whose sum is σ = 2750000162. Its totient is φ = 2750000160.

The previous prime is 2750000153. The next prime is 2750000249. The reversal of 2750000161 is 1610000572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2576577600 + 173422561 = 50760^2 + 13169^2 .

It is a cyclic number.

It is not a de Polignac number, because 2750000161 - 2³ = 2750000153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2750000261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1375000080 + 1375000081.

It is an arithmetic number, because the mean of its divisors is an integer number (1375000081).

Almost surely, 2^2750000161 is an apocalyptic number.

It is an amenable number.

2750000161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2750000161 is an equidigital number, since it uses as much as digits as its factorization.

2750000161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 2750000161 is about 52440.4439435823. The cubic root of 2750000161 is about 1401.0196926688.

The spelling of 2750000161 in words is "two billion, seven hundred fifty million, one hundred sixty-one", and thus it is an aban number.