57491856 has 160 divisors (see below), whose sum is σ = 175703040. Its totient is φ = 18195840.

The previous prime is 57491827. The next prime is 57491867. The reversal of 57491856 is 65819475.

It is a zygodrome in base 3.

It is an unprimeable number.

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, 1084726 + ... + 1084778.

It is an arithmetic number, because the mean of its divisors is an integer number (1098144).

Almost surely, 2^57491856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57491856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87851520).

57491856 is an abundant number, since it is smaller than the sum of its proper divisors (118211184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57491856 is an equidigital number, since it uses as much as digits as its factorization.

57491856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 89 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 57491856 is about 7582.3384255782. The cubic root of 57491856 is about 385.9539082481.

The spelling of 57491856 in words is "fifty-seven million, four hundred ninety-one thousand, eight hundred fifty-six".