2545603 has 2 divisors, whose sum is σ = 2545604. Its totient is φ = 2545602.

The previous prime is 2545573. The next prime is 2545619. The reversal of 2545603 is 3065452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2545603 - 2²¹ = 448451 is a prime.

2545603 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2545633) 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 as a sum of consecutive naturals, namely, 1272801 + 1272802.

It is an arithmetic number, because the mean of its divisors is an integer number (1272802).

2^2545603 is an apocalyptic number.

2545603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545603 is an equidigital number, since it uses as much as digits as its factorization.

2545603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2545603 is about 1595.4945941619. The cubic root of 2545603 is about 136.5411505409.

The spelling of 2545603 in words is "two million, five hundred forty-five thousand, six hundred three".