2056421701 has 2 divisors, whose sum is σ = 2056421702. Its totient is φ = 2056421700.

The previous prime is 2056421683. The next prime is 2056421729. The reversal of 2056421701 is 1071246502.

It is an a-pointer prime, because the next prime (2056421729) can be obtained adding 2056421701 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1132322500 + 924099201 = 33650^2 + 30399^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056421701 - 2¹¹ = 2056419653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2056421701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056421761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028210850 + 1028210851.

It is an arithmetic number, because the mean of its divisors is an integer number (1028210851).

Almost surely, 2^2056421701 is an apocalyptic number.

It is an amenable number.

2056421701 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056421701 is an equidigital number, since it uses as much as digits as its factorization.

2056421701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2056421701 is about 45347.7860650330. The cubic root of 2056421701 is about 1271.6591663338.

The spelling of 2056421701 in words is "two billion, fifty-six million, four hundred twenty-one thousand, seven hundred one".