56069281 has 4 divisors (see below), whose sum is σ = 59367492. Its totient is φ = 52771072.

The previous prime is 56069269. The next prime is 56069287. The reversal of 56069281 is 18296065.

56069281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18296065 = 5 ⋅3659213.

It can be written as a sum of positive squares in 2 ways, for example, as 17430625 + 38638656 = 4175^2 + 6216^2 .

It is a cyclic number.

It is not a de Polignac number, because 56069281 - 2⁵ = 56069249 is a prime.

It is a super-2 number, since 2×56069281² = 6287528543713922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56069281.

It is not an unprimeable number, because it can be changed into a prime (56069287) 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 3 ways as a sum of consecutive naturals, for example, 1649080 + ... + 1649113.

It is an arithmetic number, because the mean of its divisors is an integer number (14841873).

Almost surely, 2^56069281 is an apocalyptic number.

It is an amenable number.

56069281 is a deficient number, since it is larger than the sum of its proper divisors (3298211).

56069281 is a wasteful number, since it uses less digits than its factorization.

56069281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3298210.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 56069281 is about 7487.9423742441. The cubic root of 56069281 is about 382.7439450893.

The spelling of 56069281 in words is "fifty-six million, sixty-nine thousand, two hundred eighty-one".