57448289 has 2 divisors, whose sum is σ = 57448290. Its totient is φ = 57448288.

The previous prime is 57448277. The next prime is 57448297. The reversal of 57448289 is 98284475.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46689889 + 10758400 = 6833^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 57448289 - 2⁸ = 57448033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57448889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28724144 + 28724145.

It is an arithmetic number, because the mean of its divisors is an integer number (28724145).

Almost surely, 2^57448289 is an apocalyptic number.

It is an amenable number.

57448289 is a deficient number, since it is larger than the sum of its proper divisors (1).

57448289 is an equidigital number, since it uses as much as digits as its factorization.

57448289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The square root of 57448289 is about 7579.4649547313. The cubic root of 57448289 is about 385.8563923894.

The spelling of 57448289 in words is "fifty-seven million, four hundred forty-eight thousand, two hundred eighty-nine".