2078503 has 4 divisors (see below), whose sum is σ = 2375440. Its totient is φ = 1781568.

The previous prime is 2078497. The next prime is 2078507. The reversal of 2078503 is 3058702.

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 2078503 - 2¹⁷ = 1947431 is a prime.

It is a Duffinian number.

2078503 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078507) 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, 148458 + ... + 148471.

It is an arithmetic number, because the mean of its divisors is an integer number (593860).

2^2078503 is an apocalyptic number.

2078503 is a deficient number, since it is larger than the sum of its proper divisors (296937).

2078503 is an equidigital number, since it uses as much as digits as its factorization.

2078503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296936.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2078503 is about 1441.7014253999. The cubic root of 2078503 is about 127.6194548809.

The spelling of 2078503 in words is "two million, seventy-eight thousand, five hundred three".