56771843 has 4 divisors (see below), whose sum is σ = 59240208. Its totient is φ = 54303480.

The previous prime is 56771783. The next prime is 56771861. The reversal of 56771843 is 34817765.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34817765 = 5 ⋅6963553.

It is a cyclic number.

It is not a de Polignac number, because 56771843 - 2²⁰ = 55723267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56771843.

It is not an unprimeable number, because it can be changed into a prime (56771873) 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, 1234148 + ... + 1234193.

It is an arithmetic number, because the mean of its divisors is an integer number (14810052).

Almost surely, 2^56771843 is an apocalyptic number.

56771843 is a deficient number, since it is larger than the sum of its proper divisors (2468365).

56771843 is a wasteful number, since it uses less digits than its factorization.

56771843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468364.

The product of its digits is 141120, while the sum is 41.

The square root of 56771843 is about 7534.7092180123. The cubic root of 56771843 is about 384.3359396534.

The spelling of 56771843 in words is "fifty-six million, seven hundred seventy-one thousand, eight hundred forty-three".