281051 has 4 divisors (see below), whose sum is σ = 283392. Its totient is φ = 278712.

The previous prime is 281033. The next prime is 281053. The reversal of 281051 is 150182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281051 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281051.

It is not an unprimeable number, because it can be changed into a prime (281053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980 + ... + 1233.

It is an arithmetic number, because the mean of its divisors is an integer number (70848).

2²⁸¹⁰⁵¹ is an apocalyptic number.

281051 is a deficient number, since it is larger than the sum of its proper divisors (2341).

281051 is a wasteful number, since it uses less digits than its factorization.

281051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 281051 is about 530.1424336912. The cubic root of 281051 is about 65.5030785415.

The spelling of 281051 in words is "two hundred eighty-one thousand, fifty-one".