56471689 has 4 divisors (see below), whose sum is σ = 56495380. Its totient is φ = 56448000.

The previous prime is 56471683. The next prime is 56471717. The reversal of 56471689 is 98617465.

56471689 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: 98617465 = 5 ⋅19723493.

It can be written as a sum of positive squares in 2 ways, for example, as 6175225 + 50296464 = 2485^2 + 7092^2 .

It is a cyclic number.

It is not a de Polignac number, because 56471689 - 2¹⁹ = 55947401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56471683) 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, 7812 + ... + 13189.

It is an arithmetic number, because the mean of its divisors is an integer number (14123845).

Almost surely, 2^56471689 is an apocalyptic number.

It is an amenable number.

56471689 is a deficient number, since it is larger than the sum of its proper divisors (23691).

56471689 is a wasteful number, since it uses less digits than its factorization.

56471689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23690.

The product of its digits is 362880, while the sum is 46.

The square root of 56471689 is about 7514.7647335096. The cubic root of 56471689 is about 383.6574115524.

The spelling of 56471689 in words is "fifty-six million, four hundred seventy-one thousand, six hundred eighty-nine".