2003554045 has 4 divisors (see below), whose sum is σ = 2404264860. Its totient is φ = 1602843232.

The previous prime is 2003554031. The next prime is 2003554051. The reversal of 2003554045 is 5404553002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1057745529 + 945808516 = 32523^2 + 30754^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003554045 - 2⁵ = 2003554013 is a prime.

It is a super-2 number, since 2×2003554045² = 8028457622471724050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200355400 + ... + 200355409.

It is an arithmetic number, because the mean of its divisors is an integer number (601066215).

Almost surely, 2^2003554045 is an apocalyptic number.

It is an amenable number.

2003554045 is a deficient number, since it is larger than the sum of its proper divisors (400710815).

2003554045 is an equidigital number, since it uses as much as digits as its factorization.

2003554045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400710814.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 2003554045 is about 44761.0773440497. The cubic root of 2003554045 is about 1260.6669109499. Note that the first 3 decimals are identical.

The spelling of 2003554045 in words is "two billion, three million, five hundred fifty-four thousand, forty-five".