5256806386 has 16 divisors (see below), whose sum is σ = 8505038808. Its totient is φ = 2422425600.

The previous prime is 5256806371. The next prime is 5256806441. The reversal of 5256806386 is 6836086525.

It can be written as a sum of positive squares in 4 ways, for example, as 5187600625 + 69205761 = 72025^2 + 8319^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141045 + ... + 174376.

Almost surely, 2^5256806386 is an apocalyptic number.

5256806386 is a deficient number, since it is larger than the sum of its proper divisors (3248232422).

5256806386 is a wasteful number, since it uses less digits than its factorization.

5256806386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316077.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The square root of 5256806386 is about 72503.8370432903. The cubic root of 5256806386 is about 1738.7640831448.

The spelling of 5256806386 in words is "five billion, two hundred fifty-six million, eight hundred six thousand, three hundred eighty-six".