105550 has 12 divisors (see below), whose sum is σ = 196416. Its totient is φ = 42200.

The previous prime is 105541. The next prime is 105557. The reversal of 105550 is 55501.

Added to its reverse (55501) it gives a 5-th power (161051 = 11⁵).

It is a super-2 number, since 2×105550² = 22281605000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105557) by changing a digit.

105550 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1006 + ... + 1105.

It is an arithmetic number, because the mean of its divisors is an integer number (16368).

2¹⁰⁵⁵⁵⁰ is an apocalyptic number.

105550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105550 is a deficient number, since it is larger than the sum of its proper divisors (90866).

105550 is a wasteful number, since it uses less digits than its factorization.

105550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 105550 is about 324.8845948949. The cubic root of 105550 is about 47.2591688299.

Adding to 105550 its reverse (55501), we get a 5-th power (161051 = 11⁵).

The spelling of 105550 in words is "one hundred five thousand, five hundred fifty".