56005011 has 12 divisors (see below), whose sum is σ = 80971488. Its totient is φ = 37301904.

The previous prime is 56005009. The next prime is 56005031. The reversal of 56005011 is 11050065.

56005011 is a `hidden beast` number, since 5 + 600 + 50 + 11 = 666.

56005011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56005011 - 2¹ = 56005009 is a prime.

It is a super-2 number, since 2×56005011² = 6273122514220242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56005031) 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 11 ways as a sum of consecutive naturals, for example, 10621 + ... + 14993.

It is an arithmetic number, because the mean of its divisors is an integer number (6747624).

Almost surely, 2^56005011 is an apocalyptic number.

56005011 is a deficient number, since it is larger than the sum of its proper divisors (24966477).

56005011 is a wasteful number, since it uses less digits than its factorization.

56005011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5802 (or 5799 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 56005011 is about 7483.6495775791. The cubic root of 56005011 is about 382.5976477595.

Adding to 56005011 its reverse (11050065), we get a palindrome (67055076).

The spelling of 56005011 in words is "fifty-six million, five thousand, eleven".