5205688357 has 4 divisors (see below), whose sum is σ = 5211186336. Its totient is φ = 5200190380.

The previous prime is 5205688309. The next prime is 5205688363. The reversal of 5205688357 is 7538865025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5205688357 - 2¹⁵ = 5205655589 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5205688357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5205688387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2747569 + ... + 2749462.

It is an arithmetic number, because the mean of its divisors is an integer number (1302796584).

Almost surely, 2^5205688357 is an apocalyptic number.

It is an amenable number.

5205688357 is a deficient number, since it is larger than the sum of its proper divisors (5497979).

5205688357 is an equidigital number, since it uses as much as digits as its factorization.

5205688357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497978.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The square root of 5205688357 is about 72150.4563880229. The cubic root of 5205688357 is about 1733.1097083258.

The spelling of 5205688357 in words is "five billion, two hundred five million, six hundred eighty-eight thousand, three hundred fifty-seven".