5209851259 has 4 divisors (see below), whose sum is σ = 5218268440. Its totient is φ = 5201434080.

The previous prime is 5209851221. The next prime is 5209851271. The reversal of 5209851259 is 9521589025.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5209851259 - 2⁹ = 5209850747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5209858259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4207662 + ... + 4208899.

It is an arithmetic number, because the mean of its divisors is an integer number (1304567110).

Almost surely, 2^5209851259 is an apocalyptic number.

5209851259 is a deficient number, since it is larger than the sum of its proper divisors (8417181).

5209851259 is an equidigital number, since it uses as much as digits as its factorization.

5209851259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8417180.

The product of its (nonzero) digits is 324000, while the sum is 46.

The square root of 5209851259 is about 72179.2993800854. The cubic root of 5209851259 is about 1733.5715648600.

The spelling of 5209851259 in words is "five billion, two hundred nine million, eight hundred fifty-one thousand, two hundred fifty-nine".