2145803 has 8 divisors (see below), whose sum is σ = 2464320. Its totient is φ = 1847880.

The previous prime is 2145779. The next prime is 2145821. The reversal of 2145803 is 3085412.

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 2145803 - 2⁸ = 2145547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145823) 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, 4925 + ... + 5342.

It is an arithmetic number, because the mean of its divisors is an integer number (308040).

2^2145803 is an apocalyptic number.

2145803 is a deficient number, since it is larger than the sum of its proper divisors (318517).

2145803 is a wasteful number, since it uses less digits than its factorization.

2145803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10297.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2145803 is about 1464.8559656157. The cubic root of 2145803 is about 128.9822502269.

The spelling of 2145803 in words is "two million, one hundred forty-five thousand, eight hundred three".