2051510243 has 2 divisors, whose sum is σ = 2051510244. Its totient is φ = 2051510242.

The previous prime is 2051510221. The next prime is 2051510249. The reversal of 2051510243 is 3420151502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2051510243 - 2⁸ = 2051509987 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (2051510249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025755121 + 1025755122.

It is an arithmetic number, because the mean of its divisors is an integer number (1025755122).

Almost surely, 2^2051510243 is an apocalyptic number.

2051510243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051510243 is an equidigital number, since it uses as much as digits as its factorization.

2051510243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2051510243 is about 45293.6004640832. The cubic root of 2051510243 is about 1270.6459695592.

Adding to 2051510243 its reverse (3420151502), we get a palindrome (5471661745).

The spelling of 2051510243 in words is "two billion, fifty-one million, five hundred ten thousand, two hundred forty-three".