281156 has 6 divisors (see below), whose sum is σ = 492030. Its totient is φ = 140576.

The previous prime is 281153. The next prime is 281159. The reversal of 281156 is 651182.

281156 is nontrivially palindromic in base 16.

281156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (281153) and next prime (281159).

It can be written as a sum of positive squares in only one way, i.e., 280900 + 256 = 530^2 + 16^2 .

It is not an unprimeable number, because it can be changed into a prime (281153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35141 + ... + 35148.

It is an arithmetic number, because the mean of its divisors is an integer number (82005).

2²⁸¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

281156 is a deficient number, since it is larger than the sum of its proper divisors (210874).

281156 is a wasteful number, since it uses less digits than its factorization.

281156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70293 (or 70291 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 281156 is about 530.2414544337. The cubic root of 281156 is about 65.5112347918.

The spelling of 281156 in words is "two hundred eighty-one thousand, one hundred fifty-six".