2100573 has 10 divisors (see below), whose sum is σ = 3138014. Its totient is φ = 1400328.

The previous prime is 2100569. The next prime is 2100587. The reversal of 2100573 is 3750012.

It can be written as a sum of positive squares in only one way, i.e., 1542564 + 558009 = 1242^2 + 747^2 .

It is not a de Polignac number, because 2100573 - 2² = 2100569 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 (2100523) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12886 + ... + 13047.

2^2100573 is an apocalyptic number.

It is an amenable number.

2100573 is a deficient number, since it is larger than the sum of its proper divisors (1037441).

2100573 is an equidigital number, since it uses as much as digits as its factorization.

2100573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25945 (or 25936 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 2100573 is about 1449.3353649173. The cubic root of 2100573 is about 128.0695626120.

Adding to 2100573 its reverse (3750012), we get a palindrome (5850585).

The spelling of 2100573 in words is "two million, one hundred thousand, five hundred seventy-three".