5266261249 has 2 divisors, whose sum is σ = 5266261250. Its totient is φ = 5266261248.

The previous prime is 5266261243. The next prime is 5266261261. The reversal of 5266261249 is 9421626625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4451558400 + 814702849 = 66720^2 + 28543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5266261249 is a prime.

It is not a weakly prime, because it can be changed into another prime (5266261243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2633130624 + 2633130625.

It is an arithmetic number, because the mean of its divisors is an integer number (2633130625).

Almost surely, 2^5266261249 is an apocalyptic number.

It is an amenable number.

5266261249 is a deficient number, since it is larger than the sum of its proper divisors (1).

5266261249 is an equidigital number, since it uses as much as digits as its factorization.

5266261249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 43.

The square root of 5266261249 is about 72569.0102523109. The cubic root of 5266261249 is about 1739.8059026237.

The spelling of 5266261249 in words is "five billion, two hundred sixty-six million, two hundred sixty-one thousand, two hundred forty-nine".