57897909 has 28 divisors (see below), whose sum is σ = 88874016. Its totient is φ = 37680552.

The previous prime is 57897907. The next prime is 57897913. The reversal of 57897909 is 90979875.

It is not a de Polignac number, because 57897909 - 2¹ = 57897907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57897901) 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 in 27 ways as a sum of consecutive naturals, for example, 30424 + ... + 32270.

It is an arithmetic number, because the mean of its divisors is an integer number (3174072).

Almost surely, 2^57897909 is an apocalyptic number.

It is an amenable number.

57897909 is a deficient number, since it is larger than the sum of its proper divisors (30976107).

57897909 is an equidigital number, since it uses as much as digits as its factorization.

57897909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908 (or 1893 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 57897909 is about 7609.0675512838. The cubic root of 57897909 is about 386.8604147760.

The spelling of 57897909 in words is "fifty-seven million, eight hundred ninety-seven thousand, nine hundred nine".