5851172281 has 6 divisors (see below), whose sum is σ = 5963657630. Its totient is φ = 5740770048.

The previous prime is 5851172231. The next prime is 5851172287. The reversal of 5851172281 is 1822711585.

It can be written as a sum of positive squares in 3 ways, for example, as 3854423056 + 1996749225 = 62084^2 + 44685^2 .

It is not a de Polignac number, because 5851172281 - 2⁹ = 5851171769 is a prime.

It is a super-2 number, since 2×5851172281² = 68472434123885485922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5851172287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1038696 + ... + 1044313.

Almost surely, 2^5851172281 is an apocalyptic number.

It is an amenable number.

5851172281 is a deficient number, since it is larger than the sum of its proper divisors (112485349).

5851172281 is an equidigital number, since it uses as much as digits as its factorization.

5851172281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083115 (or 2083062 counting only the distinct ones).

The product of its digits is 44800, while the sum is 40.

The square root of 5851172281 is about 76492.9557606450. The cubic root of 5851172281 is about 1801.9702993951.

The spelling of 5851172281 in words is "five billion, eight hundred fifty-one million, one hundred seventy-two thousand, two hundred eighty-one".