57158091 has 6 divisors (see below), whose sum is σ = 82561700. Its totient is φ = 38105388.

The previous prime is 57158089. The next prime is 57158107. The reversal of 57158091 is 19085175.

57158091 is a `hidden beast` number, since 5 + 71 + 580 + 9 + 1 = 666.

57158091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57158091 - 2¹ = 57158089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57158011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3175441 + ... + 3175458.

Almost surely, 2^57158091 is an apocalyptic number.

57158091 is a deficient number, since it is larger than the sum of its proper divisors (25403609).

57158091 is a wasteful number, since it uses less digits than its factorization.

57158091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6350905 (or 6350902 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 57158091 is about 7560.2970179749. The cubic root of 57158091 is about 385.2055820013.

The spelling of 57158091 in words is "fifty-seven million, one hundred fifty-eight thousand, ninety-one".