291259 has 4 divisors (see below), whose sum is σ = 297504. Its totient is φ = 285016.

The previous prime is 291257. The next prime is 291271. The reversal of 291259 is 952192.

291259 = T₈₇ + T₈₈ + ... + T₁₃₃.

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

It is a cyclic number.

It is not a de Polignac number, because 291259 - 2¹ = 291257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (291253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3052 + ... + 3145.

It is an arithmetic number, because the mean of its divisors is an integer number (74376).

2²⁹¹²⁵⁹ is an apocalyptic number.

291259 is a deficient number, since it is larger than the sum of its proper divisors (6245).

291259 is an equidigital number, since it uses as much as digits as its factorization.

291259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244.

The product of its digits is 1620, while the sum is 28.

The square root of 291259 is about 539.6841668976. The cubic root of 291259 is about 66.2867080300.

The spelling of 291259 in words is "two hundred ninety-one thousand, two hundred fifty-nine".