57881 has 2 divisors, whose sum is σ = 57882. Its totient is φ = 57880.

The previous prime is 57859. The next prime is 57899. The reversal of 57881 is 18875.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33856 + 24025 = 184^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 57881 - 2¹⁰ = 56857 is a prime.

It is a super-2 number, since 2×57881² = 6700420322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 57881.

It is not a weakly prime, because it can be changed into another prime (57781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28940 + 28941.

It is an arithmetic number, because the mean of its divisors is an integer number (28941).

2⁵⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

57881 is a deficient number, since it is larger than the sum of its proper divisors (1).

57881 is an equidigital number, since it uses as much as digits as its factorization.

57881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 29.

The square root of 57881 is about 240.5847044182. The cubic root of 57881 is about 38.6822750436.

The spelling of 57881 in words is "fifty-seven thousand, eight hundred eighty-one".