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881 is a prime number
BaseRepresentation
bin1101110001
31012122
431301
512011
64025
72366
oct1561
91178
10881
11731
12615
1352a
1446d
153db
hex371

881 has 2 divisors, whose sum is σ = 882. Its totient is φ = 880.

The previous prime is 877. The next prime is 883. The reversal of 881 is 188.

881 = 44 + 54.

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., 625 + 256 = 25^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 881 - 22 = 877 is a prime.

It is a super-2 number, since 2×8812 = 1552322, which contains 22 as substring.

Together with 883, it forms a pair of twin primes.

It is a Chen prime.

It is a magnanimous number.

It is a plaindrome in base 7, base 9 and base 14.

It is a nialpdrome in base 10 and base 11.

It is not a weakly prime, because it can be changed into another prime (883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440 + 441.

It is an arithmetic number, because the mean of its divisors is an integer number (441).

It is an amenable number.

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

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

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

The product of its digits is 64, while the sum is 17.

The square root of 881 is about 29.6816441593. The cubic root of 881 is about 9.5864682036.

Adding to 881 its sum of digits (17), we get a palindrome (898).

The spelling of 881 in words is "eight hundred eighty-one", and thus it is an aban number.