57053891 has 4 divisors (see below), whose sum is σ = 57069000. Its totient is φ = 57038784.

The previous prime is 57053833. The next prime is 57053929. The reversal of 57053891 is 19835075.

57053891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 57053891 - 2¹⁴ = 57037507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57053831) 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 3 ways as a sum of consecutive naturals, for example, 3635 + ... + 11283.

It is an arithmetic number, because the mean of its divisors is an integer number (14267250).

Almost surely, 2^57053891 is an apocalyptic number.

57053891 is a deficient number, since it is larger than the sum of its proper divisors (15109).

57053891 is an equidigital number, since it uses as much as digits as its factorization.

57053891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15108.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 57053891 is about 7553.4026107444. The cubic root of 57053891 is about 384.9713612250.

The spelling of 57053891 in words is "fifty-seven million, fifty-three thousand, eight hundred ninety-one".