5681049901 has 2 divisors, whose sum is σ = 5681049902. Its totient is φ = 5681049900.

The previous prime is 5681049889. The next prime is 5681049931. The reversal of 5681049901 is 1099401865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5435375625 + 245674276 = 73725^2 + 15674^2 .

It is a cyclic number.

It is not a de Polignac number, because 5681049901 - 2⁹ = 5681049389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5681049931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2840524950 + 2840524951.

It is an arithmetic number, because the mean of its divisors is an integer number (2840524951).

Almost surely, 2^5681049901 is an apocalyptic number.

It is an amenable number.

5681049901 is a deficient number, since it is larger than the sum of its proper divisors (1).

5681049901 is an equidigital number, since it uses as much as digits as its factorization.

5681049901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 5681049901 is about 75372.7397737405. The cubic root of 5681049901 is about 1784.3342071501.

The spelling of 5681049901 in words is "five billion, six hundred eighty-one million, forty-nine thousand, nine hundred one".