5312005261 has 2 divisors, whose sum is σ = 5312005262. Its totient is φ = 5312005260.

The previous prime is 5312005247. The next prime is 5312005271. The reversal of 5312005261 is 1625002135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4951233225 + 360772036 = 70365^2 + 18994^2 .

It is a cyclic number.

It is not a de Polignac number, because 5312005261 - 2⁷ = 5312005133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5312005201) 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, 2656002630 + 2656002631.

It is an arithmetic number, because the mean of its divisors is an integer number (2656002631).

Almost surely, 2^5312005261 is an apocalyptic number.

It is an amenable number.

5312005261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5312005261 is an equidigital number, since it uses as much as digits as its factorization.

5312005261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 5312005261 is about 72883.5047250062. The cubic root of 5312005261 is about 1744.8288446072.

Adding to 5312005261 its reverse (1625002135), we get a palindrome (6937007396).

The spelling of 5312005261 in words is "five billion, three hundred twelve million, five thousand, two hundred sixty-one".