1286061251 has 2 divisors, whose sum is σ = 1286061252. Its totient is φ = 1286061250.

The previous prime is 1286061239. The next prime is 1286061263. The reversal of 1286061251 is 1521606821.

It is a balanced prime because it is at equal distance from previous prime (1286061239) and next prime (1286061263).

It is a cyclic number.

It is not a de Polignac number, because 1286061251 - 2⁶ = 1286061187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1286061451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643030625 + 643030626.

It is an arithmetic number, because the mean of its divisors is an integer number (643030626).

Almost surely, 2^1286061251 is an apocalyptic number.

1286061251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1286061251 is an equidigital number, since it uses as much as digits as its factorization.

1286061251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1286061251 is about 35861.6961534169. The cubic root of 1286061251 is about 1087.4781783792.

The spelling of 1286061251 in words is "one billion, two hundred eighty-six million, sixty-one thousand, two hundred fifty-one".