5515656161 has 2 divisors, whose sum is σ = 5515656162. Its totient is φ = 5515656160.

The previous prime is 5515656089. The next prime is 5515656169. The reversal of 5515656161 is 1616565155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4600230625 + 915425536 = 67825^2 + 30256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5515656161 is a prime.

It is not a weakly prime, because it can be changed into another prime (5515656169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2757828080 + 2757828081.

It is an arithmetic number, because the mean of its divisors is an integer number (2757828081).

Almost surely, 2^5515656161 is an apocalyptic number.

It is an amenable number.

5515656161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5515656161 is an equidigital number, since it uses as much as digits as its factorization.

5515656161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 41.

The square root of 5515656161 is about 74267.4636769023. The cubic root of 5515656161 is about 1766.8474809871.

The spelling of 5515656161 in words is "five billion, five hundred fifteen million, six hundred fifty-six thousand, one hundred sixty-one".