2503943 has 4 divisors (see below), whose sum is σ = 2696568. Its totient is φ = 2311320.

The previous prime is 2503931. The next prime is 2503961. The reversal of 2503943 is 3493052.

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 2503943 - 2⁴ = 2503927 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 (2502943) 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, 96293 + ... + 96318.

It is an arithmetic number, because the mean of its divisors is an integer number (674142).

2^2503943 is an apocalyptic number.

2503943 is a deficient number, since it is larger than the sum of its proper divisors (192625).

2503943 is a wasteful number, since it uses less digits than its factorization.

2503943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192624.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 2503943 is about 1582.3852249057. The cubic root of 2503943 is about 135.7921963410.

Adding to 2503943 its reverse (3493052), we get a palindrome (5996995).

The spelling of 2503943 in words is "two million, five hundred three thousand, nine hundred forty-three".