57230281 has 2 divisors, whose sum is σ = 57230282. Its totient is φ = 57230280.

The previous prime is 57230269. The next prime is 57230323. The reversal of 57230281 is 18203275.

57230281 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., 34999056 + 22231225 = 5916^2 + 4715^2 .

It is a cyclic number.

It is not a de Polignac number, because 57230281 - 2⁵ = 57230249 is a prime.

It is a super-2 number, since 2×57230281² = 6550610126677922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57230221) 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, 28615140 + 28615141.

It is an arithmetic number, because the mean of its divisors is an integer number (28615141).

Almost surely, 2^57230281 is an apocalyptic number.

It is an amenable number.

57230281 is a deficient number, since it is larger than the sum of its proper divisors (1).

57230281 is an equidigital number, since it uses as much as digits as its factorization.

57230281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 57230281 is about 7565.0697947871. The cubic root of 57230281 is about 385.3676838235.

The spelling of 57230281 in words is "fifty-seven million, two hundred thirty thousand, two hundred eighty-one".