281061 has 24 divisors (see below), whose sum is σ = 471744. Its totient is φ = 159360.

The previous prime is 281053. The next prime is 281063. The reversal of 281061 is 160182.

It is not a de Polignac number, because 281061 - 2³ = 281053 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281061.

It is not an unprimeable number, because it can be changed into a prime (281063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1600 + ... + 1766.

It is an arithmetic number, because the mean of its divisors is an integer number (19656).

2²⁸¹⁰⁶¹ is an apocalyptic number.

It is an amenable number.

281061 is a deficient number, since it is larger than the sum of its proper divisors (190683).

281061 is a wasteful number, since it uses less digits than its factorization.

281061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 281061 is about 530.1518650349. The cubic root of 281061 is about 65.5038554147.

It can be divided in two parts, 28 and 1061, that added together give a square (1089 = 33²).

The spelling of 281061 in words is "two hundred eighty-one thousand, sixty-one".