2556903203 has 2 divisors, whose sum is σ = 2556903204. Its totient is φ = 2556903202.

The previous prime is 2556903149. The next prime is 2556903227. The reversal of 2556903203 is 3023096552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2556903203 - 2¹⁶ = 2556837667 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556903263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278451601 + 1278451602.

It is an arithmetic number, because the mean of its divisors is an integer number (1278451602).

Almost surely, 2^2556903203 is an apocalyptic number.

2556903203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556903203 is an equidigital number, since it uses as much as digits as its factorization.

2556903203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 2556903203 is about 50565.8303897009. The cubic root of 2556903203 is about 1367.4289255606.

Adding to 2556903203 its reverse (3023096552), we get a palindrome (5579999755).

The spelling of 2556903203 in words is "two billion, five hundred fifty-six million, nine hundred three thousand, two hundred three".