57075661 has 2 divisors, whose sum is σ = 57075662. Its totient is φ = 57075660.

The previous prime is 57075617. The next prime is 57075701. The reversal of 57075661 is 16657075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31573161 + 25502500 = 5619^2 + 5050^2 .

It is a cyclic number.

It is not a de Polignac number, because 57075661 - 2⁹ = 57075149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57075661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57075461) 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, 28537830 + 28537831.

It is an arithmetic number, because the mean of its divisors is an integer number (28537831).

Almost surely, 2^57075661 is an apocalyptic number.

It is an amenable number.

57075661 is a deficient number, since it is larger than the sum of its proper divisors (1).

57075661 is an equidigital number, since it uses as much as digits as its factorization.

57075661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 57075661 is about 7554.8435456997. The cubic root of 57075661 is about 385.0203193863.

The spelling of 57075661 in words is "fifty-seven million, seventy-five thousand, six hundred sixty-one".