5121353509 has 2 divisors, whose sum is σ = 5121353510. Its totient is φ = 5121353508.

The previous prime is 5121353383. The next prime is 5121353527. The reversal of 5121353509 is 9053531215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4385750625 + 735602884 = 66225^2 + 27122^2 .

It is a cyclic number.

It is not a de Polignac number, because 5121353509 - 2⁹ = 5121352997 is a prime.

It is a super-2 number, since 2×5121353509² = 52456523528293226162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5121353579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560676754 + 2560676755.

It is an arithmetic number, because the mean of its divisors is an integer number (2560676755).

Almost surely, 2^5121353509 is an apocalyptic number.

It is an amenable number.

5121353509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121353509 is an equidigital number, since it uses as much as digits as its factorization.

5121353509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 5121353509 is about 71563.6325866707. The cubic root of 5121353509 is about 1723.6996160787.

The spelling of 5121353509 in words is "five billion, one hundred twenty-one million, three hundred fifty-three thousand, five hundred nine".