2750003 has 4 divisors (see below), whose sum is σ = 2894760. Its totient is φ = 2605248.

The previous prime is 2749991. The next prime is 2750021. The reversal of 2750003 is 3000572.

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 2750003 - 2¹² = 2745907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2750053) 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, 72350 + ... + 72387.

It is an arithmetic number, because the mean of its divisors is an integer number (723690).

2^2750003 is an apocalyptic number.

2750003 is a deficient number, since it is larger than the sum of its proper divisors (144757).

2750003 is a wasteful number, since it uses less digits than its factorization.

2750003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144756.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 2750003 is about 1658.3132997115. The cubic root of 2750003 is about 140.1020174789.

Adding to 2750003 its reverse (3000572), we get a palindrome (5750575).

The spelling of 2750003 in words is "two million, seven hundred fifty thousand, three".