56393917 has 4 divisors (see below), whose sum is σ = 56561596. Its totient is φ = 56226240.

The previous prime is 56393903. The next prime is 56393923. The reversal of 56393917 is 71939365.

It is a happy number.

56393917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71939365 = 5 ⋅14387873.

It can be written as a sum of positive squares in 2 ways, for example, as 14584761 + 41809156 = 3819^2 + 6466^2 .

It is a cyclic number.

It is not a de Polignac number, because 56393917 - 2¹⁹ = 55869629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56393017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83334 + ... + 84007.

It is an arithmetic number, because the mean of its divisors is an integer number (14140399).

Almost surely, 2^56393917 is an apocalyptic number.

It is an amenable number.

56393917 is a deficient number, since it is larger than the sum of its proper divisors (167679).

56393917 is a wasteful number, since it uses less digits than its factorization.

56393917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167678.

The product of its digits is 153090, while the sum is 43.

The square root of 56393917 is about 7509.5883375855. The cubic root of 56393917 is about 383.4812081448.

The spelling of 56393917 in words is "fifty-six million, three hundred ninety-three thousand, nine hundred seventeen".