5240286661 has 2 divisors, whose sum is σ = 5240286662. Its totient is φ = 5240286660.

The previous prime is 5240286643. The next prime is 5240286671. The reversal of 5240286661 is 1666820425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3242733025 + 1997553636 = 56945^2 + 44694^2 .

It is a cyclic number.

It is not a de Polignac number, because 5240286661 - 2¹⁷ = 5240155589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5240286671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2620143330 + 2620143331.

It is an arithmetic number, because the mean of its divisors is an integer number (2620143331).

Almost surely, 2^5240286661 is an apocalyptic number.

It is an amenable number.

5240286661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5240286661 is an equidigital number, since it uses as much as digits as its factorization.

5240286661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 5240286661 is about 72389.8242918160. The cubic root of 5240286661 is about 1736.9407932550.

The spelling of 5240286661 in words is "five billion, two hundred forty million, two hundred eighty-six thousand, six hundred sixty-one".