57071293 has 2 divisors, whose sum is σ = 57071294. Its totient is φ = 57071292.

The previous prime is 57071251. The next prime is 57071359. The reversal of 57071293 is 39217075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42341049 + 14730244 = 6507^2 + 3838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57071293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57071233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28535646 + 28535647.

It is an arithmetic number, because the mean of its divisors is an integer number (28535647).

Almost surely, 2^57071293 is an apocalyptic number.

It is an amenable number.

57071293 is a deficient number, since it is larger than the sum of its proper divisors (1).

57071293 is an equidigital number, since it uses as much as digits as its factorization.

57071293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 57071293 is about 7554.5544541025. The cubic root of 57071293 is about 385.0104972682.

The spelling of 57071293 in words is "fifty-seven million, seventy-one thousand, two hundred ninety-three".