56000005 has 4 divisors (see below), whose sum is σ = 67200012. Its totient is φ = 44800000.

The previous prime is 56000003. The next prime is 56000029. The reversal of 56000005 is 50000065.

It is a happy number.

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 28058209 + 27941796 = 5297^2 + 5286^2 .

It is not a de Polignac number, because 56000005 - 2¹ = 56000003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56000003) 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, 5599996 + ... + 5600005.

It is an arithmetic number, because the mean of its divisors is an integer number (16800003).

Almost surely, 2^56000005 is an apocalyptic number.

It is an amenable number.

56000005 is a deficient number, since it is larger than the sum of its proper divisors (11200007).

56000005 is a wasteful number, since it uses less digits than its factorization.

56000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11200006.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 56000005 is about 7483.3151076244. The cubic root of 56000005 is about 382.5862479410.

The spelling of 56000005 in words is "fifty-six million, five", and thus it is an aban number and an uban number.