57771393 has 32 divisors (see below), whose sum is σ = 83064960. Its totient is φ = 35642880.

The previous prime is 57771391. The next prime is 57771401. The reversal of 57771393 is 39317775.

It is not a de Polignac number, because 57771393 - 2¹ = 57771391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57771391) 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 in 31 ways as a sum of consecutive naturals, for example, 421621 + ... + 421757.

It is an arithmetic number, because the mean of its divisors is an integer number (2595780).

Almost surely, 2^57771393 is an apocalyptic number.

It is an amenable number.

57771393 is a deficient number, since it is larger than the sum of its proper divisors (25293567).

57771393 is a wasteful number, since it uses less digits than its factorization.

57771393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337.

The product of its digits is 138915, while the sum is 42.

The square root of 57771393 is about 7600.7495025162. The cubic root of 57771393 is about 386.5784257454.

The spelling of 57771393 in words is "fifty-seven million, seven hundred seventy-one thousand, three hundred ninety-three".