56984281 has 2 divisors, whose sum is σ = 56984282. Its totient is φ = 56984280.

The previous prime is 56984273. The next prime is 56984327. The reversal of 56984281 is 18248965.

It is a happy number.

56984281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54686025 + 2298256 = 7395^2 + 1516^2 .

It is a cyclic number.

It is not a de Polignac number, because 56984281 - 2³ = 56984273 is a prime.

It is a super-2 number, since 2×56984281² = 6494416562173922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56984251) 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 as a sum of consecutive naturals, namely, 28492140 + 28492141.

It is an arithmetic number, because the mean of its divisors is an integer number (28492141).

Almost surely, 2^56984281 is an apocalyptic number.

It is an amenable number.

56984281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56984281 is an equidigital number, since it uses as much as digits as its factorization.

56984281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 56984281 is about 7548.7933472841. The cubic root of 56984281 is about 384.8147329224.

The spelling of 56984281 in words is "fifty-six million, nine hundred eighty-four thousand, two hundred eighty-one".