105491 has 2 divisors, whose sum is σ = 105492. Its totient is φ = 105490.

The previous prime is 105467. The next prime is 105499. The reversal of 105491 is 194501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105491 - 2¹⁴ = 89107 is a prime.

It is a super-2 number, since 2×105491² = 22256702162, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 105491.

It is not a weakly prime, because it can be changed into another prime (105499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52745 + 52746.

It is an arithmetic number, because the mean of its divisors is an integer number (52746).

2¹⁰⁵⁴⁹¹ is an apocalyptic number.

105491 is a deficient number, since it is larger than the sum of its proper divisors (1).

105491 is an equidigital number, since it uses as much as digits as its factorization.

105491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 105491 is about 324.7937807286. The cubic root of 105491 is about 47.2503615959.

Adding to 105491 its reverse (194501), we get a palindrome (299992).

The spelling of 105491 in words is "one hundred five thousand, four hundred ninety-one".