105521055 has 32 divisors (see below), whose sum is σ = 175564800. Its totient is φ = 54061440.

The previous prime is 105521051. The next prime is 105521081. The reversal of 105521055 is 550125501.

It is not a de Polignac number, because 105521055 - 2² = 105521051 is a prime.

It is a super-2 number, since 2×105521055² = 22269386096626050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105521051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68524 + ... + 70046.

It is an arithmetic number, because the mean of its divisors is an integer number (5486400).

Almost surely, 2^105521055 is an apocalyptic number.

105521055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105521055 is a deficient number, since it is larger than the sum of its proper divisors (70043745).

105521055 is a wasteful number, since it uses less digits than its factorization.

105521055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 105521055 is about 10272.3441823179. The cubic root of 105521055 is about 472.5484847086.

Adding to 105521055 its reverse (550125501), we get a palindrome (655646556).

The spelling of 105521055 in words is "one hundred five million, five hundred twenty-one thousand, fifty-five".