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105055 = 521011
BaseRepresentation
bin11001101001011111
312100002221
4121221133
511330210
62130211
7615166
oct315137
9170087
10105055
1171a25
1250967
1338a82
142a3dd
15211da
hex19a5f

105055 has 4 divisors (see below), whose sum is σ = 126072. Its totient is φ = 84040.

The previous prime is 105037. The next prime is 105071. The reversal of 105055 is 550501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550501 = 778643.

It is not a de Polignac number, because 105055 - 25 = 105023 is a prime.

It is a super-2 number, since 2×1050552 = 22073106050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10501 + ... + 10510.

It is an arithmetic number, because the mean of its divisors is an integer number (31518).

2105055 is an apocalyptic number.

105055 is a deficient number, since it is larger than the sum of its proper divisors (21017).

105055 is an equidigital number, since it uses as much as digits as its factorization.

105055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21016.

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

The square root of 105055 is about 324.1218906523. The cubic root of 105055 is about 47.1851756088.

Adding to 105055 its reverse (550501), we get a palindrome (655556).

It can be divided in two parts, 10505 and 5, that multiplied together give a palindrome (52525).

The spelling of 105055 in words is "one hundred five thousand, fifty-five".

Divisors: 1 5 21011 105055