2123573 has 4 divisors (see below), whose sum is σ = 2235360. Its totient is φ = 2011788.

The previous prime is 2123557. The next prime is 2123581. The reversal of 2123573 is 3753212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2123573 - 2⁴ = 2123557 is a prime.

It is a d-powerful number, because it can be written as 2 + 1 + 2¹⁷ + 3⁹ + 5⁹ + 7 + 3⁹ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123773) 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, 55865 + ... + 55902.

It is an arithmetic number, because the mean of its divisors is an integer number (558840).

2^2123573 is an apocalyptic number.

It is an amenable number.

2123573 is a deficient number, since it is larger than the sum of its proper divisors (111787).

2123573 is a wasteful number, since it uses less digits than its factorization.

2123573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111786.

The product of its digits is 1260, while the sum is 23.

The square root of 2123573 is about 1457.2484345505. The cubic root of 2123573 is about 128.5352949018.

Adding to 2123573 its reverse (3753212), we get a palindrome (5876785).

The spelling of 2123573 in words is "two million, one hundred twenty-three thousand, five hundred seventy-three".