295821 has 6 divisors (see below), whose sum is σ = 427310. Its totient is φ = 197208.

The previous prime is 295819. The next prime is 295831. The reversal of 295821 is 128592.

It can be written as a sum of positive squares in only one way, i.e., 260100 + 35721 = 510^2 + 189^2 .

It is not a de Polignac number, because 295821 - 2¹ = 295819 is a prime.

It is a Duffinian number.

295821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (295831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16426 + ... + 16443.

2²⁹⁵⁸²¹ is an apocalyptic number.

It is an amenable number.

295821 is a deficient number, since it is larger than the sum of its proper divisors (131489).

295821 is a wasteful number, since it uses less digits than its factorization.

295821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32875 (or 32872 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 295821 is about 543.8942912000. The cubic root of 295821 is about 66.6310003666.

The spelling of 295821 in words is "two hundred ninety-five thousand, eight hundred twenty-one".