56840171 has 4 divisors (see below), whose sum is σ = 57126000. Its totient is φ = 56554344.

The previous prime is 56840159. The next prime is 56840183. The reversal of 56840171 is 17104865.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17104865 = 5 ⋅3420973.

It is an interprime number because it is at equal distance from previous prime (56840159) and next prime (56840183).

It is a cyclic number.

It is not a de Polignac number, because 56840171 - 2¹⁴ = 56823787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56840101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142616 + ... + 143013.

It is an arithmetic number, because the mean of its divisors is an integer number (14281500).

Almost surely, 2^56840171 is an apocalyptic number.

56840171 is a deficient number, since it is larger than the sum of its proper divisors (285829).

56840171 is a wasteful number, since it uses less digits than its factorization.

56840171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285828.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 56840171 is about 7539.2420706594. The cubic root of 56840171 is about 384.4900675700.

The spelling of 56840171 in words is "fifty-six million, eight hundred forty thousand, one hundred seventy-one".