56743849 has 4 divisors (see below), whose sum is σ = 57521236. Its totient is φ = 55966464.

The previous prime is 56743811. The next prime is 56743853. The reversal of 56743849 is 94834765.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94834765 = 5 ⋅18966953.

It can be written as a sum of positive squares in 2 ways, for example, as 23474025 + 33269824 = 4845^2 + 5768^2 .

It is a cyclic number.

It is not a de Polignac number, because 56743849 - 2⁷ = 56743721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56743799 and 56743808.

It is not an unprimeable number, because it can be changed into a prime (56743859) 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, 388584 + ... + 388729.

It is an arithmetic number, because the mean of its divisors is an integer number (14380309).

Almost surely, 2^56743849 is an apocalyptic number.

It is an amenable number.

56743849 is a deficient number, since it is larger than the sum of its proper divisors (777387).

56743849 is an equidigital number, since it uses as much as digits as its factorization.

56743849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777386.

The product of its digits is 725760, while the sum is 46.

The square root of 56743849 is about 7532.8513193876. The cubic root of 56743849 is about 384.2727576919.

The spelling of 56743849 in words is "fifty-six million, seven hundred forty-three thousand, eight hundred forty-nine".