56301681 has 4 divisors (see below), whose sum is σ = 75068912. Its totient is φ = 37534452.

The previous prime is 56301649. The next prime is 56301737. The reversal of 56301681 is 18610365.

56301681 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56301681 - 2⁵ = 56301649 is a prime.

It is a super-2 number, since 2×56301681² = 6339758566851522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56301601) 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, 9383611 + ... + 9383616.

It is an arithmetic number, because the mean of its divisors is an integer number (18767228).

Almost surely, 2^56301681 is an apocalyptic number.

It is an amenable number.

56301681 is a deficient number, since it is larger than the sum of its proper divisors (18767231).

56301681 is a wasteful number, since it uses less digits than its factorization.

56301681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18767230.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 56301681 is about 7503.4446089779. Note that the first 3 decimals coincide. The cubic root of 56301681 is about 383.2720243895.

The spelling of 56301681 in words is "fifty-six million, three hundred one thousand, six hundred eighty-one".