57066091 has 2 divisors, whose sum is σ = 57066092. Its totient is φ = 57066090.

The previous prime is 57066077. The next prime is 57066103. The reversal of 57066091 is 19066075.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57066091 - 2⁷ = 57065963 is a prime.

It is not a weakly prime, because it can be changed into another prime (57066011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28533045 + 28533046.

It is an arithmetic number, because the mean of its divisors is an integer number (28533046).

Almost surely, 2^57066091 is an apocalyptic number.

57066091 is a deficient number, since it is larger than the sum of its proper divisors (1).

57066091 is an equidigital number, since it uses as much as digits as its factorization.

57066091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 57066091 is about 7554.2101506379. The cubic root of 57066091 is about 384.9987991192.

The spelling of 57066091 in words is "fifty-seven million, sixty-six thousand, ninety-one".