56128611 has 32 divisors (see below), whose sum is σ = 98800128. Its totient is φ = 27440640.

The previous prime is 56128609. The next prime is 56128621. The reversal of 56128611 is 11682165.

56128611 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 56128611 - 2¹ = 56128609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56128621) 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 31 ways as a sum of consecutive naturals, for example, 3220 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (3087504).

Almost surely, 2^56128611 is an apocalyptic number.

56128611 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

56128611 is a deficient number, since it is larger than the sum of its proper divisors (42671517).

56128611 is a wasteful number, since it uses less digits than its factorization.

56128611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14331.

The product of its digits is 2880, while the sum is 30.

The square root of 56128611 is about 7491.9030292710. The cubic root of 56128611 is about 382.8788983291.

The spelling of 56128611 in words is "fifty-six million, one hundred twenty-eight thousand, six hundred eleven".