2445143 has 4 divisors (see below), whose sum is σ = 2461488. Its totient is φ = 2428800.

The previous prime is 2445139. The next prime is 2445173. The reversal of 2445143 is 3415442.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2445143 - 2² = 2445139 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 (2445173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7946 + ... + 8247.

It is an arithmetic number, because the mean of its divisors is an integer number (615372).

2^2445143 is an apocalyptic number.

2445143 is a deficient number, since it is larger than the sum of its proper divisors (16345).

2445143 is a wasteful number, since it uses less digits than its factorization.

2445143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16344.

The product of its digits is 1920, while the sum is 23.

The square root of 2445143 is about 1563.6953028004. The cubic root of 2445143 is about 134.7208314228.

Subtracting 2445143 from its reverse (3415442), we obtain a cube (970299 = 99³).

The spelling of 2445143 in words is "two million, four hundred forty-five thousand, one hundred forty-three".