5205551839 has 8 divisors (see below), whose sum is σ = 5334865200. Its totient is φ = 5076350400.

The previous prime is 5205551833. The next prime is 5205551891. The reversal of 5205551839 is 9381555025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5205551839 - 2³ = 5205551831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5205551795 and 5205551804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5205551831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70437 + ... + 123985.

It is an arithmetic number, because the mean of its divisors is an integer number (666858150).

Almost surely, 2^5205551839 is an apocalyptic number.

5205551839 is a deficient number, since it is larger than the sum of its proper divisors (129313361).

5205551839 is a wasteful number, since it uses less digits than its factorization.

5205551839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55961.

The product of its (nonzero) digits is 270000, while the sum is 43.

The square root of 5205551839 is about 72149.5103171186. The cubic root of 5205551839 is about 1733.0945580566.

The spelling of 5205551839 in words is "five billion, two hundred five million, five hundred fifty-one thousand, eight hundred thirty-nine".