2045555403 has 4 divisors (see below), whose sum is σ = 2727407208. Its totient is φ = 1363703600.

The previous prime is 2045555389. The next prime is 2045555417. The reversal of 2045555403 is 3045555402.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2045555389) and next prime (2045555417).

It is a cyclic number.

It is not a de Polignac number, because 2045555403 - 2⁴ = 2045555387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2045555423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340925898 + ... + 340925903.

It is an arithmetic number, because the mean of its divisors is an integer number (681851802).

Almost surely, 2^2045555403 is an apocalyptic number.

2045555403 is a deficient number, since it is larger than the sum of its proper divisors (681851805).

2045555403 is an equidigital number, since it uses as much as digits as its factorization.

2045555403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681851804.

The product of its (nonzero) digits is 60000, while the sum is 33.

The square root of 2045555403 is about 45227.8166950385. The cubic root of 2045555403 is about 1269.4153596887.

Subtracting 2045555403 from its reverse (3045555402), we obtain a palindrome (999999999).

The spelling of 2045555403 in words is "two billion, forty-five million, five hundred fifty-five thousand, four hundred three".