56838281 has 2 divisors, whose sum is σ = 56838282. Its totient is φ = 56838280.

The previous prime is 56838227. The next prime is 56838323. The reversal of 56838281 is 18283865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53655625 + 3182656 = 7325^2 + 1784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56838281 is a prime.

It is a super-2 number, since 2×56838281² = 6461180374069922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56838211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28419140 + 28419141.

It is an arithmetic number, because the mean of its divisors is an integer number (28419141).

Almost surely, 2^56838281 is an apocalyptic number.

It is an amenable number.

56838281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56838281 is an equidigital number, since it uses as much as digits as its factorization.

56838281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 41.

The square root of 56838281 is about 7539.1167254527. The cubic root of 56838281 is about 384.4858059462.

The spelling of 56838281 in words is "fifty-six million, eight hundred thirty-eight thousand, two hundred eighty-one".