56416281 has 16 divisors (see below), whose sum is σ = 78062400. Its totient is φ = 36198848.

The previous prime is 56416273. The next prime is 56416291. The reversal of 56416281 is 18261465.

56416281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56416281 - 2³ = 56416273 is a prime.

It is a super-2 number, since 2×56416281² = 6365593523741922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56416201) 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 15 ways as a sum of consecutive naturals, for example, 33010 + ... + 34676.

It is an arithmetic number, because the mean of its divisors is an integer number (4878900).

Almost surely, 2^56416281 is an apocalyptic number.

It is an amenable number.

56416281 is a deficient number, since it is larger than the sum of its proper divisors (21646119).

56416281 is a wasteful number, since it uses less digits than its factorization.

56416281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088.

The product of its digits is 11520, while the sum is 33.

The square root of 56416281 is about 7511.0772196803. The cubic root of 56416281 is about 383.5318935187.

The spelling of 56416281 in words is "fifty-six million, four hundred sixteen thousand, two hundred eighty-one".