2100055 has 8 divisors (see below), whose sum is σ = 2531232. Its totient is φ = 1672608.

The previous prime is 2100053. The next prime is 2100071. The reversal of 2100055 is 5500012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2100055 - 2¹ = 2100053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (316404).

2^2100055 is an apocalyptic number.

2100055 is a deficient number, since it is larger than the sum of its proper divisors (431177).

2100055 is a wasteful number, since it uses less digits than its factorization.

2100055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 2100055 is about 1449.1566512976. The cubic root of 2100055 is about 128.0590344549.

Adding to 2100055 its reverse (5500012), we get a palindrome (7600067).

The spelling of 2100055 in words is "two million, one hundred thousand, fifty-five".