105210055 has 16 divisors (see below), whose sum is σ = 131804064. Its totient is φ = 80542080.

The previous prime is 105210047. The next prime is 105210089. The reversal of 105210055 is 550012501.

It is not a de Polignac number, because 105210055 - 2³ = 105210047 is a prime.

It is a super-2 number, since 2×105210055² = 22138311346206050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6624 + ... + 15946.

It is an arithmetic number, because the mean of its divisors is an integer number (8237754).

Almost surely, 2^105210055 is an apocalyptic number.

105210055 is a deficient number, since it is larger than the sum of its proper divisors (26594009).

105210055 is an equidigital number, since it uses as much as digits as its factorization.

105210055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9426.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 105210055 is about 10257.1952794124. The cubic root of 105210055 is about 472.0837837838.

Adding to 105210055 its reverse (550012501), we get a palindrome (655222556).

The spelling of 105210055 in words is "one hundred five million, two hundred ten thousand, fifty-five".