2540445603 has 4 divisors (see below), whose sum is σ = 3387260808. Its totient is φ = 1693630400.

The previous prime is 2540445601. The next prime is 2540445613. The reversal of 2540445603 is 3065440452.

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 2540445603 - 2¹ = 2540445601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2540445601) 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, 423407598 + ... + 423407603.

It is an arithmetic number, because the mean of its divisors is an integer number (846815202).

Almost surely, 2^2540445603 is an apocalyptic number.

2540445603 is a deficient number, since it is larger than the sum of its proper divisors (846815205).

2540445603 is an equidigital number, since it uses as much as digits as its factorization.

2540445603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846815204.

The product of its (nonzero) digits is 57600, while the sum is 33.

The square root of 2540445603 is about 50402.8332834574. The cubic root of 2540445603 is about 1364.4887731207.

The spelling of 2540445603 in words is "two billion, five hundred forty million, four hundred forty-five thousand, six hundred three".