57384881 has 8 divisors (see below), whose sum is σ = 59629800. Its totient is φ = 55157760.

The previous prime is 57384869. The next prime is 57384907. The reversal of 57384881 is 18848375.

It can be written as a sum of positive squares in 4 ways, for example, as 6974881 + 50410000 = 2641^2 + 7100^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57384881 is a prime.

It is a super-2 number, since 2×57384881² = 6586049134768322, which contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321 + ... + 10961.

It is an arithmetic number, because the mean of its divisors is an integer number (7453725).

Almost surely, 2^57384881 is an apocalyptic number.

It is an amenable number.

57384881 is a deficient number, since it is larger than the sum of its proper divisors (2244919).

57384881 is a wasteful number, since it uses less digits than its factorization.

57384881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8899.

The product of its digits is 215040, while the sum is 44.

The square root of 57384881 is about 7575.2809188835. The cubic root of 57384881 is about 385.7143783591.

The spelling of 57384881 in words is "fifty-seven million, three hundred eighty-four thousand, eight hundred eighty-one".