491361 has 16 divisors (see below), whose sum is σ = 724416. Its totient is φ = 294336.

The previous prime is 491357. The next prime is 491371. The reversal of 491361 is 163194.

It is not a de Polignac number, because 491361 - 2² = 491357 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491361.

It is not an unprimeable number, because it can be changed into a prime (491341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1531 + ... + 1823.

It is an arithmetic number, because the mean of its divisors is an integer number (45276).

2⁴⁹¹³⁶¹ is an apocalyptic number.

It is an amenable number.

491361 is a deficient number, since it is larger than the sum of its proper divisors (233055).

491361 is a wasteful number, since it uses less digits than its factorization.

491361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its digits is 648, while the sum is 24.

The square root of 491361 is about 700.9714687489. The cubic root of 491361 is about 78.9102757447.

The spelling of 491361 in words is "four hundred ninety-one thousand, three hundred sixty-one".