47881 has 2 divisors, whose sum is σ = 47882. Its totient is φ = 47880.

The previous prime is 47869. The next prime is 47903. The reversal of 47881 is 18874.

47881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46656 + 1225 = 216^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 47881 - 2¹¹ = 45833 is a prime.

It is a super-2 number, since 2×47881² = 4585180322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23940 + 23941.

It is an arithmetic number, because the mean of its divisors is an integer number (23941).

2⁴⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

47881 is a deficient number, since it is larger than the sum of its proper divisors (1).

47881 is an equidigital number, since it uses as much as digits as its factorization.

47881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 28.

The square root of 47881 is about 218.8172753692. The cubic root of 47881 is about 36.3123540381.

The spelling of 47881 in words is "forty-seven thousand, eight hundred eighty-one".