5605931081 has 2 divisors, whose sum is σ = 5605931082. Its totient is φ = 5605931080.

The previous prime is 5605931047. The next prime is 5605931083. The reversal of 5605931081 is 1801395065.

5605931081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5597433856 + 8497225 = 74816^2 + 2915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5605931081 is a prime.

It is a super-2 number, since 2×5605931081² = 62852926569843657122, which contains 22 as substring.

Together with 5605931083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5605931083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802965540 + 2802965541.

It is an arithmetic number, because the mean of its divisors is an integer number (2802965541).

Almost surely, 2^5605931081 is an apocalyptic number.

It is an amenable number.

5605931081 is a deficient number, since it is larger than the sum of its proper divisors (1).

5605931081 is an equidigital number, since it uses as much as digits as its factorization.

5605931081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 5605931081 is about 74872.7659499768. The cubic root of 5605931081 is about 1776.4347144917.

The spelling of 5605931081 in words is "five billion, six hundred five million, nine hundred thirty-one thousand, eighty-one".