2163445 has 8 divisors (see below), whose sum is σ = 2617344. Its totient is φ = 1716624.

The previous prime is 2163443. The next prime is 2163461. The reversal of 2163445 is 5443612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2163445 - 2¹ = 2163443 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 6 + 3⁶ + 4² + 4⁸ + 5 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069 + ... + 2338.

It is an arithmetic number, because the mean of its divisors is an integer number (327168).

2^2163445 is an apocalyptic number.

It is an amenable number.

2163445 is a deficient number, since it is larger than the sum of its proper divisors (453899).

2163445 is a wasteful number, since it uses less digits than its factorization.

2163445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3539.

The product of its digits is 2880, while the sum is 25.

The square root of 2163445 is about 1470.8653915298. The cubic root of 2163445 is about 129.3347673758.

The spelling of 2163445 in words is "two million, one hundred sixty-three thousand, four hundred forty-five".