5286666421 has 2 divisors, whose sum is σ = 5286666422. Its totient is φ = 5286666420.

The previous prime is 5286666367. The next prime is 5286666431. The reversal of 5286666421 is 1246666825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5236114321 + 50552100 = 72361^2 + 7110^2 .

It is a cyclic number.

It is not a de Polignac number, because 5286666421 - 2¹¹ = 5286664373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5286666431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2643333210 + 2643333211.

It is an arithmetic number, because the mean of its divisors is an integer number (2643333211).

Almost surely, 2^5286666421 is an apocalyptic number.

It is an amenable number.

5286666421 is a deficient number, since it is larger than the sum of its proper divisors (1).

5286666421 is an equidigital number, since it uses as much as digits as its factorization.

5286666421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 46.

The square root of 5286666421 is about 72709.4658280475. The cubic root of 5286666421 is about 1742.0500807686.

The spelling of 5286666421 in words is "five billion, two hundred eighty-six million, six hundred sixty-six thousand, four hundred twenty-one".