2056894621 has 2 divisors, whose sum is σ = 2056894622. Its totient is φ = 2056894620.

The previous prime is 2056894589. The next prime is 2056894627. The reversal of 2056894621 is 1264986502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1618452900 + 438441721 = 40230^2 + 20939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056894621 - 2⁵ = 2056894589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056894627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028447310 + 1028447311.

It is an arithmetic number, because the mean of its divisors is an integer number (1028447311).

Almost surely, 2^2056894621 is an apocalyptic number.

It is an amenable number.

2056894621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056894621 is an equidigital number, since it uses as much as digits as its factorization.

2056894621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 2056894621 is about 45353.0001322955. Note that the first 3 decimals coincide. The cubic root of 2056894621 is about 1271.7566409839.

The spelling of 2056894621 in words is "two billion, fifty-six million, eight hundred ninety-four thousand, six hundred twenty-one".