2056148021 has 2 divisors, whose sum is σ = 2056148022. Its totient is φ = 2056148020.

The previous prime is 2056147993. The next prime is 2056148033. The reversal of 2056148021 is 1208416502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1813567396 + 242580625 = 42586^2 + 15575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056148021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056144021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028074010 + 1028074011.

It is an arithmetic number, because the mean of its divisors is an integer number (1028074011).

Almost surely, 2^2056148021 is an apocalyptic number.

It is an amenable number.

2056148021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056148021 is an equidigital number, since it uses as much as digits as its factorization.

2056148021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 2056148021 is about 45344.7683972473. The cubic root of 2056148021 is about 1271.6027506805.

The spelling of 2056148021 in words is "two billion, fifty-six million, one hundred forty-eight thousand, twenty-one".