2133641 has 4 divisors (see below), whose sum is σ = 2226432. Its totient is φ = 2040852.

The previous prime is 2133631. The next prime is 2133647. The reversal of 2133641 is 1463312.

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 a de Polignac number, because none of the positive numbers 2^k-2133641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133647) 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, 46361 + ... + 46406.

It is an arithmetic number, because the mean of its divisors is an integer number (556608).

2^2133641 is an apocalyptic number.

It is an amenable number.

2133641 is a deficient number, since it is larger than the sum of its proper divisors (92791).

2133641 is an equidigital number, since it uses as much as digits as its factorization.

2133641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92790.

The product of its digits is 432, while the sum is 20.

The square root of 2133641 is about 1460.6988053668. The cubic root of 2133641 is about 128.7381061687.

Adding to 2133641 its reverse (1463312), we get a palindrome (3596953).

The spelling of 2133641 in words is "two million, one hundred thirty-three thousand, six hundred forty-one".