281995 has 12 divisors (see below), whose sum is σ = 393984. Its totient is φ = 193200.

The previous prime is 281993. The next prime is 282001. The reversal of 281995 is 599182.

It is not a de Polignac number, because 281995 - 2¹ = 281993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 281995.

It is not an unprimeable number, because it can be changed into a prime (281993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331 + ... + 820.

It is an arithmetic number, because the mean of its divisors is an integer number (32832).

2²⁸¹⁹⁹⁵ is an apocalyptic number.

281995 is a deficient number, since it is larger than the sum of its proper divisors (111989).

281995 is a wasteful number, since it uses less digits than its factorization.

281995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 1163 counting only the distinct ones).

The product of its digits is 6480, while the sum is 34.

The square root of 281995 is about 531.0320141008. The cubic root of 281995 is about 65.5763342901.

Subtracting from 281995 its sum of digits (34), we obtain a square (281961 = 531²).

The spelling of 281995 in words is "two hundred eighty-one thousand, nine hundred ninety-five".