2100485 has 4 divisors (see below), whose sum is σ = 2520588. Its totient is φ = 1680384.

The previous prime is 2100473. The next prime is 2100487. The reversal of 2100485 is 5840012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1406596 + 693889 = 1186^2 + 833^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100485 - 2⁸ = 2100229 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 (2100487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210044 + ... + 210053.

It is an arithmetic number, because the mean of its divisors is an integer number (630147).

2^2100485 is an apocalyptic number.

It is an amenable number.

2100485 is a deficient number, since it is larger than the sum of its proper divisors (420103).

2100485 is an equidigital number, since it uses as much as digits as its factorization.

2100485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420102.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2100485 is about 1449.3050058563. The cubic root of 2100485 is about 128.0677741668.

Adding to 2100485 its reverse (5840012), we get a palindrome (7940497).

The spelling of 2100485 in words is "two million, one hundred thousand, four hundred eighty-five".