5266261243 has 2 divisors, whose sum is σ = 5266261244. Its totient is φ = 5266261242.

The previous prime is 5266261219. The next prime is 5266261249. The reversal of 5266261243 is 3421626625.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5266261243 - 2¹³ = 5266253051 is a prime.

It is not a weakly prime, because it can be changed into another prime (5266261249) 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, 2633130621 + 2633130622.

It is an arithmetic number, because the mean of its divisors is an integer number (2633130622).

Almost surely, 2^5266261243 is an apocalyptic number.

5266261243 is a deficient number, since it is larger than the sum of its proper divisors (1).

5266261243 is an equidigital number, since it uses as much as digits as its factorization.

5266261243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 37.

The square root of 5266261243 is about 72569.0102109709. The cubic root of 5266261243 is about 1739.8059019629.

Adding to 5266261243 its reverse (3421626625), we get a palindrome (8687887868).

The spelling of 5266261243 in words is "five billion, two hundred sixty-six million, two hundred sixty-one thousand, two hundred forty-three".