262491 has 8 divisors (see below), whose sum is σ = 356160. Its totient is φ = 171912.

The previous prime is 262489. The next prime is 262501. The reversal of 262491 is 194262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 262491 - 2¹ = 262489 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 262491.

It is not an unprimeable number, because it can be changed into a prime (262411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565 + ... + 918.

It is an arithmetic number, because the mean of its divisors is an integer number (44520).

2²⁶²⁴⁹¹ is an apocalyptic number.

262491 is a deficient number, since it is larger than the sum of its proper divisors (93669).

262491 is a wasteful number, since it uses less digits than its factorization.

262491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545.

The product of its digits is 864, while the sum is 24.

The square root of 262491 is about 512.3387551220. The cubic root of 262491 is about 64.0282264815.

The spelling of 262491 in words is "two hundred sixty-two thousand, four hundred ninety-one".