56971143 has 12 divisors (see below), whose sum is σ = 82362280. Its totient is φ = 37948176.

The previous prime is 56971141. The next prime is 56971153. The reversal of 56971143 is 34117965.

It is not a de Polignac number, because 56971143 - 2¹ = 56971141 is a prime.

It is a super-2 number, since 2×56971143² = 6491422269452898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56971098 and 56971107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56971141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13368 + ... + 17106.

Almost surely, 2^56971143 is an apocalyptic number.

56971143 is a deficient number, since it is larger than the sum of its proper divisors (25391137).

56971143 is a wasteful number, since it uses less digits than its factorization.

56971143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5438 (or 5435 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 56971143 is about 7547.9230918180. The cubic root of 56971143 is about 384.7851570203.

The spelling of 56971143 in words is "fifty-six million, nine hundred seventy-one thousand, one hundred forty-three".