5681551801 has 2 divisors, whose sum is σ = 5681551802. Its totient is φ = 5681551800.

The previous prime is 5681551781. The next prime is 5681551819. The reversal of 5681551801 is 1081551865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4656015225 + 1025536576 = 68235^2 + 32024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5681551801 is a prime.

It is not a weakly prime, because it can be changed into another prime (5681551891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2840775900 + 2840775901.

It is an arithmetic number, because the mean of its divisors is an integer number (2840775901).

Almost surely, 2^5681551801 is an apocalyptic number.

It is an amenable number.

5681551801 is a deficient number, since it is larger than the sum of its proper divisors (1).

5681551801 is an equidigital number, since it uses as much as digits as its factorization.

5681551801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 40.

The square root of 5681551801 is about 75376.0691532797. The cubic root of 5681551801 is about 1784.3867520718.

The spelling of 5681551801 in words is "five billion, six hundred eighty-one million, five hundred fifty-one thousand, eight hundred one".