56845389 has 4 divisors (see below), whose sum is σ = 75793856. Its totient is φ = 37896924.

The previous prime is 56845381. The next prime is 56845409. The reversal of 56845389 is 98354865.

It is a happy number.

56845389 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56845389 - 2³ = 56845381 is a prime.

It is a super-2 number, since 2×56845389² = 6462796501122642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56845381) 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, 9474229 + ... + 9474234.

It is an arithmetic number, because the mean of its divisors is an integer number (18948464).

Almost surely, 2^56845389 is an apocalyptic number.

It is an amenable number.

56845389 is a deficient number, since it is larger than the sum of its proper divisors (18948467).

56845389 is a wasteful number, since it uses less digits than its factorization.

56845389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18948466.

The product of its digits is 1036800, while the sum is 48.

The square root of 56845389 is about 7539.5881187237. The cubic root of 56845389 is about 384.5018327691.

The spelling of 56845389 in words is "fifty-six million, eight hundred forty-five thousand, three hundred eighty-nine".