57288281 has 2 divisors, whose sum is σ = 57288282. Its totient is φ = 57288280.

The previous prime is 57288269. The next prime is 57288293. The reversal of 57288281 is 18288275.

57288281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (57288269) and next prime (57288293).

It can be written as a sum of positive squares in only one way, i.e., 56550400 + 737881 = 7520^2 + 859^2 .

It is a cyclic number.

It is not a de Polignac number, because 57288281 - 2¹⁰ = 57287257 is a prime.

It is a super-2 number, since 2×57288281² = 6563894279869922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57288251) 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, 28644140 + 28644141.

It is an arithmetic number, because the mean of its divisors is an integer number (28644141).

Almost surely, 2^57288281 is an apocalyptic number.

It is an amenable number.

57288281 is a deficient number, since it is larger than the sum of its proper divisors (1).

57288281 is an equidigital number, since it uses as much as digits as its factorization.

57288281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 41.

The square root of 57288281 is about 7568.9022321602. The cubic root of 57288281 is about 385.4978234330.

The spelling of 57288281 in words is "fifty-seven million, two hundred eighty-eight thousand, two hundred eighty-one".