275861 has 4 divisors (see below), whose sum is σ = 290400. Its totient is φ = 261324.

The previous prime is 275837. The next prime is 275881. The reversal of 275861 is 168572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 275861 - 2¹⁰ = 274837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 13.

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 275861.

It is not an unprimeable number, because it can be changed into a prime (275881) 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, 7241 + ... + 7278.

It is an arithmetic number, because the mean of its divisors is an integer number (72600).

2²⁷⁵⁸⁶¹ is an apocalyptic number.

It is an amenable number.

275861 is a deficient number, since it is larger than the sum of its proper divisors (14539).

275861 is a wasteful number, since it uses less digits than its factorization.

275861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14538.

The product of its digits is 3360, while the sum is 29.

The square root of 275861 is about 525.2247138130. The cubic root of 275861 is about 65.0973688632.

The spelling of 275861 in words is "two hundred seventy-five thousand, eight hundred sixty-one".