2051020243 has 2 divisors, whose sum is σ = 2051020244. Its totient is φ = 2051020242.

The previous prime is 2051020229. The next prime is 2051020253. The reversal of 2051020243 is 3420201502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2051020243 - 2⁹ = 2051019731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2051020243.

It is not a weakly prime, because it can be changed into another prime (2051020253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025510121 + 1025510122.

It is an arithmetic number, because the mean of its divisors is an integer number (1025510122).

Almost surely, 2^2051020243 is an apocalyptic number.

2051020243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051020243 is an equidigital number, since it uses as much as digits as its factorization.

2051020243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2051020243 is about 45288.1909883802. The cubic root of 2051020243 is about 1270.5447975724.

Adding to 2051020243 its reverse (3420201502), we get a palindrome (5471221745).

The spelling of 2051020243 in words is "two billion, fifty-one million, twenty thousand, two hundred forty-three".