56306881 has 8 divisors (see below), whose sum is σ = 58243328. Its totient is φ = 54378000.

The previous prime is 56306879. The next prime is 56306891. The reversal of 56306881 is 18860365.

56306881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56306881 - 2¹ = 56306879 is a prime.

It is a super-2 number, since 2×56306881² = 6340929695896322, 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 56306881.

It is not an unprimeable number, because it can be changed into a prime (56306821) 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 7 ways as a sum of consecutive naturals, for example, 16111 + ... + 19291.

It is an arithmetic number, because the mean of its divisors is an integer number (7280416).

Almost surely, 2^56306881 is an apocalyptic number.

It is an amenable number.

56306881 is a deficient number, since it is larger than the sum of its proper divisors (1936447).

56306881 is a wasteful number, since it uses less digits than its factorization.

56306881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 56306881 is about 7503.7911084998. The cubic root of 56306881 is about 383.2838236415.

The spelling of 56306881 in words is "fifty-six million, three hundred six thousand, eight hundred eighty-one".