5215645349 has 2 divisors, whose sum is σ = 5215645350. Its totient is φ = 5215645348.

The previous prime is 5215645321. The next prime is 5215645387. The reversal of 5215645349 is 9435465125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3361912324 + 1853733025 = 57982^2 + 43055^2 .

It is a cyclic number.

It is not a de Polignac number, because 5215645349 - 2²⁴ = 5198868133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5215645399) 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, 2607822674 + 2607822675.

It is an arithmetic number, because the mean of its divisors is an integer number (2607822675).

Almost surely, 2^5215645349 is an apocalyptic number.

It is an amenable number.

5215645349 is a deficient number, since it is larger than the sum of its proper divisors (1).

5215645349 is an equidigital number, since it uses as much as digits as its factorization.

5215645349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 44.

The square root of 5215645349 is about 72219.4250115577. The cubic root of 5215645349 is about 1734.2139855259.

The spelling of 5215645349 in words is "five billion, two hundred fifteen million, six hundred forty-five thousand, three hundred forty-nine".