57394393 has 16 divisors (see below), whose sum is σ = 68302080. Its totient is φ = 47186496.

The previous prime is 57394387. The next prime is 57394427. The reversal of 57394393 is 39349375.

It is not a de Polignac number, because 57394393 - 2²¹ = 55297241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57394303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33055 + ... + 34747.

It is an arithmetic number, because the mean of its divisors is an integer number (4268880).

Almost surely, 2^57394393 is an apocalyptic number.

It is an amenable number.

57394393 is a deficient number, since it is larger than the sum of its proper divisors (10907687).

57394393 is a wasteful number, since it uses less digits than its factorization.

57394393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896.

The product of its digits is 306180, while the sum is 43.

The square root of 57394393 is about 7575.9087243710. The cubic root of 57394393 is about 385.7356889227.

The spelling of 57394393 in words is "fifty-seven million, three hundred ninety-four thousand, three hundred ninety-three".