2555503 has 4 divisors (see below), whose sum is σ = 2591568. Its totient is φ = 2519440.

The previous prime is 2555477. The next prime is 2555521. The reversal of 2555503 is 3055552.

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 2555503 - 2⁹ = 2554991 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 (2555543) 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, 17926 + ... + 18067.

It is an arithmetic number, because the mean of its divisors is an integer number (647892).

2^2555503 is an apocalyptic number.

2555503 is a deficient number, since it is larger than the sum of its proper divisors (36065).

2555503 is an equidigital number, since it uses as much as digits as its factorization.

2555503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36064.

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 2555503 is about 1598.5940698001. The cubic root of 2555503 is about 136.7179270993.

The spelling of 2555503 in words is "two million, five hundred fifty-five thousand, five hundred three".