2256517143 has 16 divisors (see below), whose sum is σ = 3488336640. Its totient is φ = 1438938072.

The previous prime is 2256517129. The next prime is 2256517147. The reversal of 2256517143 is 3417156522.

2256517143 is a `hidden beast` number, since 22 + 565 + 1 + 71 + 4 + 3 = 666.

It is not a de Polignac number, because 2256517143 - 2¹⁶ = 2256451607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2256517098 and 2256517107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256517147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1816221 + ... + 1817462.

It is an arithmetic number, because the mean of its divisors is an integer number (218021040).

Almost surely, 2^2256517143 is an apocalyptic number.

2256517143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2256517143 is a deficient number, since it is larger than the sum of its proper divisors (1231819497).

2256517143 is a wasteful number, since it uses less digits than its factorization.

2256517143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633715 (or 3633709 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 2256517143 is about 47502.8119483468. The cubic root of 2256517143 is about 1311.6346439471.

The spelling of 2256517143 in words is "two billion, two hundred fifty-six million, five hundred seventeen thousand, one hundred forty-three".