57660289 has 2 divisors, whose sum is σ = 57660290. Its totient is φ = 57660288.

The previous prime is 57660271. The next prime is 57660293. The reversal of 57660289 is 98206675.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32490000 + 25170289 = 5700^2 + 5017^2 .

It is a cyclic number.

It is not a de Polignac number, because 57660289 - 2¹¹ = 57658241 is a prime.

It is not a weakly prime, because it can be changed into another prime (57660299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28830144 + 28830145.

It is an arithmetic number, because the mean of its divisors is an integer number (28830145).

Almost surely, 2^57660289 is an apocalyptic number.

It is an amenable number.

57660289 is a deficient number, since it is larger than the sum of its proper divisors (1).

57660289 is an equidigital number, since it uses as much as digits as its factorization.

57660289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 57660289 is about 7593.4372322421. The cubic root of 57660289 is about 386.3304485013.

The spelling of 57660289 in words is "fifty-seven million, six hundred sixty thousand, two hundred eighty-nine".