5131706845 has 4 divisors (see below), whose sum is σ = 6158048220. Its totient is φ = 4105365472.

The previous prime is 5131706837. The next prime is 5131706849. The reversal of 5131706845 is 5486071315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5486071315 = 5 ⋅1097214263.

It can be written as a sum of positive squares in 2 ways, for example, as 3052894009 + 2078812836 = 55253^2 + 45594^2 .

It is a cyclic number.

It is not a de Polignac number, because 5131706845 - 2³ = 5131706837 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 5131706798 and 5131706807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131706849) 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, 513170680 + ... + 513170689.

It is an arithmetic number, because the mean of its divisors is an integer number (1539512055).

Almost surely, 2^5131706845 is an apocalyptic number.

It is an amenable number.

5131706845 is a deficient number, since it is larger than the sum of its proper divisors (1026341375).

5131706845 is a wasteful number, since it uses less digits than its factorization.

5131706845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026341374.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 5131706845 is about 71635.9326385858. The cubic root of 5131706845 is about 1724.8603788135.

The spelling of 5131706845 in words is "five billion, one hundred thirty-one million, seven hundred six thousand, eight hundred forty-five".