56440589 has 4 divisors (see below), whose sum is σ = 56655456. Its totient is φ = 56225724.

The previous prime is 56440547. The next prime is 56440603. The reversal of 56440589 is 98504465.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98504465 = 5 ⋅19700893.

It is a cyclic number.

It is not a de Polignac number, because 56440589 - 2⁸ = 56440333 is a prime.

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 (56440519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107039 + ... + 107564.

It is an arithmetic number, because the mean of its divisors is an integer number (14163864).

Almost surely, 2^56440589 is an apocalyptic number.

It is an amenable number.

56440589 is a deficient number, since it is larger than the sum of its proper divisors (214867).

56440589 is a wasteful number, since it uses less digits than its factorization.

56440589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214866.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 56440589 is about 7512.6951888121. The cubic root of 56440589 is about 383.5869695502.

The spelling of 56440589 in words is "fifty-six million, four hundred forty thousand, five hundred eighty-nine".