5351321561 has 2 divisors, whose sum is σ = 5351321562. Its totient is φ = 5351321560.

The previous prime is 5351321501. The next prime is 5351321597. The reversal of 5351321561 is 1651231535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4459701961 + 891619600 = 66781^2 + 29860^2 .

It is a cyclic number.

It is not a de Polignac number, because 5351321561 - 2³⁰ = 4277579737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5351321501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2675660780 + 2675660781.

It is an arithmetic number, because the mean of its divisors is an integer number (2675660781).

Almost surely, 2^5351321561 is an apocalyptic number.

It is an amenable number.

5351321561 is a deficient number, since it is larger than the sum of its proper divisors (1).

5351321561 is an equidigital number, since it uses as much as digits as its factorization.

5351321561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13500, while the sum is 32.

The square root of 5351321561 is about 73152.7276388242. The cubic root of 5351321561 is about 1749.1229957778.

The spelling of 5351321561 in words is "five billion, three hundred fifty-one million, three hundred twenty-one thousand, five hundred sixty-one".