56647741 has 4 divisors (see below), whose sum is σ = 56841372. Its totient is φ = 56454112.

The previous prime is 56647733. The next prime is 56647753. The reversal of 56647741 is 14774665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14774665 = 5 ⋅2954933.

It can be written as a sum of positive squares in 2 ways, for example, as 34047225 + 22600516 = 5835^2 + 4754^2 .

It is a cyclic number.

It is not a de Polignac number, because 56647741 - 2³ = 56647733 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56647694 and 56647703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56647771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96376 + ... + 96961.

It is an arithmetic number, because the mean of its divisors is an integer number (14210343).

Almost surely, 2^56647741 is an apocalyptic number.

It is an amenable number.

56647741 is a deficient number, since it is larger than the sum of its proper divisors (193631).

56647741 is a wasteful number, since it uses less digits than its factorization.

56647741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193630.

The product of its digits is 141120, while the sum is 40.

The square root of 56647741 is about 7526.4693582051. The cubic root of 56647741 is about 384.0556853742.

The spelling of 56647741 in words is "fifty-six million, six hundred forty-seven thousand, seven hundred forty-one".