57065993 has 2 divisors, whose sum is σ = 57065994. Its totient is φ = 57065992.

The previous prime is 57065963. The next prime is 57066007. The reversal of 57065993 is 39956075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53173264 + 3892729 = 7292^2 + 1973^2 .

It is a cyclic number.

It is not a de Polignac number, because 57065993 - 2²⁴ = 40288777 is a prime.

It is not a weakly prime, because it can be changed into another prime (57065933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28532996 + 28532997.

It is an arithmetic number, because the mean of its divisors is an integer number (28532997).

Almost surely, 2^57065993 is an apocalyptic number.

It is an amenable number.

57065993 is a deficient number, since it is larger than the sum of its proper divisors (1).

57065993 is an equidigital number, since it uses as much as digits as its factorization.

57065993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 57065993 is about 7554.2036641859. The cubic root of 57065993 is about 384.9985787320.

The spelling of 57065993 in words is "fifty-seven million, sixty-five thousand, nine hundred ninety-three".