57384891 has 24 divisors (see below), whose sum is σ = 85541040. Its totient is φ = 37043136.

The previous prime is 57384869. The next prime is 57384907. The reversal of 57384891 is 19848375.

It is not a de Polignac number, because 57384891 - 2¹⁰ = 57383867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57384841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129316 + ... + 129758.

It is an arithmetic number, because the mean of its divisors is an integer number (3564210).

Almost surely, 2^57384891 is an apocalyptic number.

57384891 is a deficient number, since it is larger than the sum of its proper divisors (28156149).

57384891 is a wasteful number, since it uses less digits than its factorization.

57384891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 872 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 57384891 is about 7575.2815789250. The cubic root of 57384891 is about 385.7144007642.

The spelling of 57384891 in words is "fifty-seven million, three hundred eighty-four thousand, eight hundred ninety-one".