105487 has 4 divisors (see below), whose sum is σ = 108376. Its totient is φ = 102600.

The previous prime is 105467. The next prime is 105491. The reversal of 105487 is 784501.

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 105487 - 2⁷ = 105359 is a prime.

It is a super-2 number, since 2×105487² = 22255014338, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389 + ... + 1462.

It is an arithmetic number, because the mean of its divisors is an integer number (27094).

2¹⁰⁵⁴⁸⁷ is an apocalyptic number.

105487 is a deficient number, since it is larger than the sum of its proper divisors (2889).

105487 is an equidigital number, since it uses as much as digits as its factorization.

105487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 105487 is about 324.7876229169. The cubic root of 105487 is about 47.2497643765.

Adding to 105487 its reverse (784501), we get a palindrome (889988).

The spelling of 105487 in words is "one hundred five thousand, four hundred eighty-seven".