57071 has 8 divisors (see below), whose sum is σ = 67584. Its totient is φ = 47160.
The previous prime is 57059. The next prime is 57073. The reversal of 57071 is 17075.
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 2k-57071 is a prime.
It is a Duffinian number.
It is a plaindrome in base 16.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (57073) 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 7 ways as a sum of consecutive naturals, for example, 86 + ... + 348.
It is an arithmetic number, because the mean of its divisors is an integer number (8448).
257071 is an apocalyptic number.
57071 is a deficient number, since it is larger than the sum of its proper divisors (10513).
57071 is a wasteful number, since it uses less digits than its factorization.
57071 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 301.
The product of its (nonzero) digits is 245, while the sum is 20.
The square root of 57071 is about 238.8953745890. The cubic root of 57071 is about 38.5009838395.
It can be divided in two parts, 570 and 71, that multiplied together give a triangular number (40470 = T284).
The spelling of 57071 in words is "fifty-seven thousand, seventy-one".
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