56428585 has 4 divisors (see below), whose sum is σ = 67714308. Its totient is φ = 45142864.

The previous prime is 56428573. The next prime is 56428609. The reversal of 56428585 is 58582465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29419776 + 27008809 = 5424^2 + 5197^2 .

It is a cyclic number.

It is not a de Polignac number, because 56428585 - 2¹⁹ = 55904297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5642854 + ... + 5642863.

It is an arithmetic number, because the mean of its divisors is an integer number (16928577).

Almost surely, 2^56428585 is an apocalyptic number.

It is an amenable number.

56428585 is a deficient number, since it is larger than the sum of its proper divisors (11285723).

56428585 is a wasteful number, since it uses less digits than its factorization.

56428585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285722.

The product of its digits is 384000, while the sum is 43.

The square root of 56428585 is about 7511.8962319776. The cubic root of 56428585 is about 383.5597733749.

The spelling of 56428585 in words is "fifty-six million, four hundred twenty-eight thousand, five hundred eighty-five".