2112653 has 4 divisors (see below), whose sum is σ = 2119260. Its totient is φ = 2106048.

The previous prime is 2112631. The next prime is 2112683. The reversal of 2112653 is 3562112.

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 619369 + 1493284 = 787^2 + 1222^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112653 - 2¹⁸ = 1850509 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 (2112683) 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, 2798 + ... + 3471.

It is an arithmetic number, because the mean of its divisors is an integer number (529815).

2^2112653 is an apocalyptic number.

It is an amenable number.

2112653 is a deficient number, since it is larger than the sum of its proper divisors (6607).

2112653 is an equidigital number, since it uses as much as digits as its factorization.

2112653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606.

The product of its digits is 360, while the sum is 20.

The square root of 2112653 is about 1453.4968180220. The cubic root of 2112653 is about 128.3145948166.

Adding to 2112653 its reverse (3562112), we get a palindrome (5674765).

The spelling of 2112653 in words is "two million, one hundred twelve thousand, six hundred fifty-three".