56004281 has 2 divisors, whose sum is σ = 56004282. Its totient is φ = 56004280.

The previous prime is 56004217. The next prime is 56004317. The reversal of 56004281 is 18240065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53875600 + 2128681 = 7340^2 + 1459^2 .

It is a cyclic number.

It is not a de Polignac number, because 56004281 - 2⁶ = 56004217 is a prime.

It is a super-2 number, since 2×56004281² = 6272958980653922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56004281.

It is not a weakly prime, because it can be changed into another prime (56004181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28002140 + 28002141.

It is an arithmetic number, because the mean of its divisors is an integer number (28002141).

Almost surely, 2^56004281 is an apocalyptic number.

It is an amenable number.

56004281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56004281 is an equidigital number, since it uses as much as digits as its factorization.

56004281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 56004281 is about 7483.6008044256. The cubic root of 56004281 is about 382.5959854232.

The spelling of 56004281 in words is "fifty-six million, four thousand, two hundred eighty-one".