2143653 has 4 divisors (see below), whose sum is σ = 2858208. Its totient is φ = 1429100.

The previous prime is 2143627. The next prime is 2143667. The reversal of 2143653 is 3563412.

It is a happy number.

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 2143653 - 2⁵ = 2143621 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143753) 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, 357273 + ... + 357278.

It is an arithmetic number, because the mean of its divisors is an integer number (714552).

2^2143653 is an apocalyptic number.

It is an amenable number.

2143653 is a deficient number, since it is larger than the sum of its proper divisors (714555).

2143653 is an equidigital number, since it uses as much as digits as its factorization.

2143653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714554.

The product of its digits is 2160, while the sum is 24.

The square root of 2143653 is about 1464.1219211527. The cubic root of 2143653 is about 128.9391576554.

The spelling of 2143653 in words is "two million, one hundred forty-three thousand, six hundred fifty-three".